Super Easy Hydrometer Kit

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The world's easiest hydrometer kit, perfect for precisely measuring your ABV! We guarantee you'll be able to understand exactly how it works with our super-easy instructions and state-of-the-art online calculator. No math? No problem!

Plus, every purchase comes with a lifetime of replacement hydrometers for just $7.99 if you break yours. That's the cheapest on the Internet!

frequently asked questions

Does Brewsy work with juice with preservatives, or pasteurized juice?

Yes, it does! The Brewsy formula can actually work with nearly all store-bought juice (even Arnold Palmer, if you’re feeling adventurous).

In U.S grocery stores, most juice is preserved with ascorbic acid, which works completely fine with our formula.

If you’re shopping in the international aisle, keep an eye out for juices with potassium sorbate, though. It’s not often found in U.S-made juices, but it’s the one preservative that won’t work with our formula.

The Brewsy Bag isn't just yeast, right?

No, the Brewsy bag isn’t just yeast at all — it’s actually a blend of five ingredients. Over hundreds of tests, the Brewsy bag has been carefully formulated to make sure YOU make the best wine possible!

Transparency is important to us — as well as knowing exactly what’s going in our bodies. Because of that, we want to share exactly what we put into each and every Brewsy bag:

1. An industry-exclusive wine yeast

2. A carefully-blended mixture of micronutrients

3. Potassium bicarbonate (to cut down on acidity)

4. Bentonite (a volcanic clay that adds clarity to your wine)

5. Malolactic culture (to turn harsher flavors into softer, smoother ones)

is it gluten free?


brewsy is 100% gluten-free and made in a facility that does not process gluten-containing ingredients.

is it keto? low-carb? low-sugar?

yes! brewsy is 100% keto-friendly and every single recipe has a 'low sugar' or keto setting! in fact, you can CHANGE any full-sugar juice into a low-sugar wine with brewsy!

100% of our recipes can be made keto-style with as little as 1g of sugar per serving. simply pick a recipe, then use our sweetness calculator on our starter recipe page and choose 'DRY | KETO'. after your wine/cider is done, you can add monkfruit, stevia, etc to taste!

when does it expire?

brewsy bags: the brewsy bags (packets) will last 1.5 years in storage.

wine or cider: your wine or cider will last 3-5 years in your refrigerator!

how sweet will it be?

great news: it's 100% up to you!

we build a really cool sweetness calculator that works with ANY of our recipes and it lets you pick whether you want your wine dry / keto, semi-dry, semi-sweet, sweet, extra sweet, or dessert wine! you can check it out in action in our starter recipe at

why isn't most wine vegan?

Almost all wines that you'll find in the store go through an unnecessary clarifying step where gelatin (from pigs) or shellfish products are used to make the wine more clear. Fortunately, you can instead clarify the wine you make at home with a mechanical step called racking. The Brewsy Bag is completely vegan, made without any animal products.

what if I don't like it?

Just text us and we'll give you a 100% refund. You'll get our cell when you open up your package.

how it works
step 1
grab any sweet drink
grab any juice or sweet drink – or make your own.
step 2
make it a little sweeter
wine grapes are twice as sweet as juice, so we need to add some sugar.
step 3
add a brewsy bag
simply tear open & pour in the brewsy bag. then shake it up!
step 4
add our special airlock on top
our airlocks seal off our juice but still lets bubbles escape. they fit in any container.
step 5
yeast eat sugar
your yeast wake up, swim around, and eat some sugar for five days! in exchange, they make alcohol & bubbles. the yeast go dormant when your wine is 12% ABV.
step 6
separate the yeast
leave the juice in the fridge for 2 more days so the yeast fall out of the juice and settle on the bottom of the container.
what's in the box?
everything you need to make 12 bottles of wine and more!
three magical brewsy bags!
three airlocks
an amazing winemaking book!
stickers to label your juice!
the varietal starter packs also include
two glass gallon jugs!
2.5 gallons of fresh juiced wine grapes!
an awesome funnel!
why wine's better with brewsy
we all know homemade is simply better – and it's true for wine and cider too. ‍

but that's not the only reason brewsy wines & ciders are better than the factory-made bottles you've had before...
guaranteed tasty or we give you your $$$ back
you get to choose exactly how sweet you want your wine or cider
you can make 12 bottles of wine with the starter kit and 12 more with each brewsy bag refill!
100% sulfite-free, preservative free, and free of artificial ingredients.

Customer Reviews

Based on 10 reviews
Shaun Obrien (Portland, US)
Fun times

I Have much have enjoyed this produce. My be it's my temperature control but for me I found it takes three times as long to brew then advertised until I get the product profile I want, but boy is it good. I can't make it fast enough for all the friends and family that want to try it. My last one was a honey, maple, habanero mead. I smoked the ingredients before hand. Calling it wildfire, boy is it good! Started bottling it and makes fantastic gifts.

April W (McKinney, US)
Boozy science

I originally bought a Brewsy kit as a gift for someone and was so intrigued I got one for myself. I figure I can never keep my "avoid alcohol" New Years resolutions anyway so I might as well embrace it! Plus it will be fun to give away to friends.
I am starting with a hard apple cider, mainly because I wanted the large glass jug. My apple cider is on day seven of fermenting and It has about 5%ABV so I am letting my little yeasties eat some more sugar for another few days. I added some cinnamon sticks to the jug. So far I am enjoying the science part of it.

Amy Snipes (Murfreesboro, US)
Love so much I can't stop recommending brewsy to my friends!

When I say it is super easy to use brewsy I mean it! The whole process is laid out step by step for you and if you have questions just check out the app!

Linda Mynier Crow (Livingston, US)
Love, love, love!

I love Brewsy.

Cindy Simpson (Austin, US)
So easy!!

Love being able to make any flavor wine I like with Brewsy! Quick and simple. And delicious!!

Cassandra Thorsen (Braselton, US)
Best Hobby for Covid

Living in an area where alcohol doesn’t get delivered is tough during quarantine. With the help of brewsy and instacart delivering juice, I always have something fun to make and delicious to drink.

kathy butler (Moscow Mills, US)

so far happy with brewsy.

Dawn Dawson (Washington, US)
Been brewsying for over a year

I love brewsy. They are very helpful if I get stumped on a slow brew or any questions I have. I am on a subscription for brewsy bags. I stopped for quite a while die to health issues. So you can imagine, I have a healthy stock of brewsy packets. I've recently used every updated packet they've had. Old to new. Also bought their hydrometer (fabulous) I still have old packets and new ones. Been brewing both to see if there is a difference. If I keep the temperature consistent, they all do what they should. Much quicker than old style brewing. Kudos brewsy. I think you arenthe bees knees and its feet. ❤

Robert Evans (Athens, US)

It’s so easy and good

Donna Mawhorter (Raleigh, US)

I can't say enough good things about this system but mostly the customer service. They are there for you every step of the way. The wine I made I used cranberry juice and a splash of apple. Awesome flavor. I forgot to measure the alcohol percentage but I'll try that out next time.