1. Ayer Coffee

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Tustin, CA

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Ayer Coffee

4.6 (729 reviews)
ModerateCoffee & Tea
Closed • 8:00 am - 4:00 pm

Ayer Coffee Photos

Business Info

AYER COFFEE ATMOSPHERE

What's the vibe?
Moderate noise
Dogs allowed
Outdoor seating

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Recommended Reviews - Ayer Coffee

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coconut water matcha cream
Stephanie P.

Popular coffee spot in OC - went on a Tuesday morning & there was still a line! Parking is easy - big parking lot. The shop is structured as a grab & go coffee spot- no indoor seating. You line up in front & get called to order & pay then wait for your drink outside. Workers were friendly & efficient! less than 5 min wait for my drink despite the growing line. It would be a perk if they had a seating area though (we need more 3rd spaces!!!). I got the coconut water matcha cream & I like how they used pink coconut water (iykyk!!) & the matcha cream was nice & consistent! I liked how refreshing this drink was! I would come back if I'm in the area again!

pumpkin matcha
Arlene M.

I waited 45 min on a Friday afternoon for a drink, which I had anticipated because of the long line. The parking lot is spacious & there are several reminders to not block the entrance of other businesses. The pumpkin matcha was great, but it doesn't justify the wait as it has a similar flavor to other coffee shops. They also give a complimentary tote bag, if you ask! I also got a blueberry matcha, not pictured here, but it was overly sweet. The interior is small & you cannot study inside. It is mainly just grab & go. The music was great! Not sure when I will be back, but I look forward to trying other items!

Mango matcha
Lauren C.

Staff is super helpful and kind. Delicious matcha. I got the mango matcha, and it's one of the best in the area. Only complaint is the long and crazy line, which can get up to 40min. Not sure if any drink is ever worth that long of a wait.

Coconut Iced Blended Coffee
Sydney H.

As someone in OC I had to see what the hype was about - 35 min later in 100° weather, I finally found out! Honestly just as good as I expected. The coconut water matcha cream was sooo good. So refreshing with great quality matcha cream. The color was gorgeous and the flavors were perfect together. My partner got the coconut iced blended coffee and it was super tasty and coconutty! Good coffee flavor too. The girls working here are also super sweet and helpful. Would come again, just need to brace myself for the line lol!

Interior
John W.

Ayer Coffee is constantly touted as one of the best matcha spots in the OC. After a while waiting on the sidelines due to the massive lines I passed by, I finally came at a good time where it wasn't too long of a wait and came away impressed. Ayer Coffee is located in the middle of a Tustin small strip mall plaza. It's a pretty small shop with very limited seating inside and usually a line waiting outside. I came in the middle of the day on a weekday around 1PM where the line wasn't too bad but grew quickly right after I left. You wait outside until you're called in to order with a menu waiting for you at the window. Ayer has a variety of coffee drinks, but I was here for the matcha which they conveniently number in order along with seasonal/special drinks. As always for me, I order the standard iced matcha latte without any syrups. Service was super kind all around. Getting the drink took about 5 minutes. All-around, I can see why people enjoy the matcha, even at the base drink level. The size is a good standard cup for about $7, and the matcha is very noticeable without being too grassy / earthy. It had a well balanced consistency and think it was mixed with solid oat milk that didn't overpower the matcha. Ayer sources their own matcha which they also sell. Overall, came away impressed that it met the hype!

Pumpkin pie matcha and salted Saigon
Maynard O.

Came here on a Friday afternoon and the line was pretty healthy. Finding a parking spot wasn't bad and we waited about 30 mins. Not much of an ambience since you just order and wait for your drinks. My wife and I ordered the pumpkin pie matcha and salted Saigon. The drinks came out super quick! BELIEVE THE HYPE. Both of these drinks were AMAZING. The pumpkin puree was real and tasted like actual pumpkin, unlike the other coffee spots that sell fake pumpkin sauce. The salted saigon is probably the best Vietnamese coffee I've ever had. No exaggeration.

Vanessa S.

Finally got to try Ayer because the line is usually long when we pass by, but today we had the time to wait. Ordered the mango matcha, matcha two, salted saigon, and salt bread. The matcha two and salt bread were solid, but the salted saigon tasted fantastic. The mango matcha didn't taste as expected, but maybe it's because mango isn't in season. I personally wouldn't get it again. Overall Ayer was good, but will definitely need to come back to try other matcha drinks. The line usually goes out the door so definitely recommend coming early. They will call you when to come in and order, otherwise it'd be way too crowded inside. Ambiance: There is no seating inside the cafe so you just come and pick up your drink/bread and leave. Only salt bread is offered food wise.

Matcha 2
Bubu N.

I wanted to hate this place because how long the wait was but when we finally got to the front we got a matcha 2, and a Saigon drip. I'm so upset the matcha here was so fire cause now I have to wait in the stupid long line again. Coffee was good too very nutty but the matcha was the star so def recommend getting one. Service was also very nice, she brought our drinks out to us.

Banana hojicha
Jessica D.

The line is always long but it's sooo worth it! Their banana hojicha is so good and I love the toffee bits. Their matcha is really good too.

Banana matcha
Yerim S.

I was impressed by the variety of coffee and matcha drinks that are here! You could have a range of fruity and tropical drinks to more rich, spice forward drinks. Because it was Summer, I opted for the guava Matcha because it sounded very refreshing. I was surprised with how not too sweet and light it was, but it was still packed with wonderful guava flavor. I was more impressed that they hand whisk every Matcha drink in a bowl, but still, they deliver with speed, efficiency, and quality. My sister got the Matcha with banana and that one was very good. You can tell they use real banana. My only thing is I believe the bananas weren't ripe enough, but I know that it is hard to always have the perfect ripeness for bananas because of demand. This is definitely a grab and go establishment. There is no inside seating or bathrooms. I do advise you to use the bathroom before because all the restaurants nearby will not allow you to use the restroom unless you make a purchase. I definitely want to try the coffee drinks next time because their name has coffee in the title so I should try what they are known for by name!

Jennifer H.

OVERALL : This was my second time at Ayer. The first time I tried their classic matcha latte w/ matcha foam, mango matcha, and strawberry matcha. The drinks were perfectly creamy esp w/ oat milk, and matcha was strong enough to hold up against all the different flavors. There's always a line out the door on a weekend afternoon, but we only waited about 20 mins and the drinks were well worth the wait. Service was super friendly and helpful w/ reccs. Note that this is more of a take-and-go spot, not for sitting inside. PARKING : There is a parking lot but it is small; might need to make some rounds before you can find a spot. The plaza gets pretty crowded during peak hours! FOOD/DRINKS : Guava Matcha Latte - sweet and refreshing, the guava doesn't overpower the matcha taste and it's a good summer drink! strawberry is prob still my go to though when I want a fruity matcha Pumpkin Matcha Latte - their fall seasonal drink! so surprisingly good - this reminded me of a pumpkin pie esp with the prominent pumpkin taste + the warm fall spices! Would def get again.

Matcha Two
Jasmine T.

We'd driven past countless times and there was always a line, so we finally stopped in. The wait is real, and it comes from two things. The ordering setup is inefficient -- you give your order to one employee who writes it on the cup, then repeat the whole thing to a second employee to pay. That part could easily be streamlined. But the other reason is that they hand-whisk the matcha fresh to order, and I'll give them full credit for that. Most places don't bother. You can tell they care about the process. Which makes it harder to say this: the matcha itself just wasn't good. It came out grainy with an artificial taste. I ordered the salted vanilla matcha cream top, and the vanilla and milk powder flavor overpowered whatever matcha was underneath. Three stars because the effort and intention are clearly there -- it's the execution on the matcha that missed for me. They're a roaster, so the coffee is probably the stronger order, and I'd try that next time.

coconut coffee
Claudia H.

coconut iced coffee - should've asked for much less sweet, it's super sweet but I like the coconutiness I also tried a bit of the mango matcha (less less sweet) and it was better than I expected actually there was quite a bit of a line but it went by pretty fast staff is very friendly

Mango Matcha

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Reviews are largely positive. People praise the vibrant matcha flavors, strong Vietnamese coffee, and popular salt bread. Service is consistently friendly and efficient.

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BEST PLACE EVER!!!!!!!!! You can come in whenever to get a delicious drink, but to see the cute…read morekitties, book online & make a reservation. Reservations include a free drink! When you get there, order your drink and they will escort you towards the babies. Shoes off and clean your hands. Sooooo many beautiful babies to play with and pet! They only let a certain amount of people in at a time so it's not crowded and not over whelming for the kitties. All the cats look very well taken care of and healthy. You can adopt a baby if you'd like to also!! I love coming here and spending time with all cats. It's very quiet and relaxing. I'm so happy a place like this exists!

YES the cats are very cute!!…read more I went at 3 pm on a Saturday with a reservation and i thought it a little bit too crowded. Maybe 6 groups was in there at the same time. There were about 15+ cats from what I counted but more than half of them were asleep. The ones awake looked a bit overstimulated so I more used the space to chill and just admire the kitties from afar. I really enjoyed the way the cafe was curated though. Lots of different areas even though it was the same room and a nice selection of toys around and even some manga for the human guests. The included drink was nice but nothing too special. I appreciated that they had a big menu to choose from though. I also forgot my socks but they sold really cute cat socks for $7

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Absolutely phenomenal! The honey vanilla latte was pure perfection... chef's kiss! Smooth, rich,…read moreand not even a hint of bitterness. It was hands down one of the best lattes I've ever had. I also tried the breakfast croissant and a few other goodies, and everything was delicious. I even brought home a bag of their espresso coffee grounds, and the aroma alone smells like heaven. This place is an absolute must-try. Five stars just doesn't seem like enough. I'll definitely be back for another honey vanilla latte!

First, for those newer to OC, a little history lesson about Kean…read more Kean was founded by coffee pioneer Martin Diedrich and his wife Karen. Martin Diedrich is the original founder of Diedrich Coffee, which was sold to Starbucks in 2006, and opening the Tustin location marked a return to the exact site of his very first full-scale Diedrich Coffee coffeehouse. So when you come to Kean, you are coming to a special place that is tied to the history of coffee in The O.C. Needless to say the coffee is roasted in-house and is excellent. I always buy an oatmilk latte here, and the coffee taste is deep and aromatic. Definitely one of the best in Orange County for the pure quality of its coffee. For Orange County, the location has a nice community vibe. Eclectic mix of tables, but there aren't always enough of them, so it always seems packed. Staff are always extremely nice. Appreciating the history, great coffee, and community feel is one thing, but you should know in advance that they do not offer wifi here. That is my only complaint and the only reason this gets a 5 and not a 4 star. I suppose if they want to maintain a certain vibe they don't want people working there, but I would be happy even with a one-hour time limit on wifi usage.

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Ayer Coffee - coffee - Updated October 2026

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