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It's hard not to love all the great things Masontops can do to make your diet healthier without making it complicated or difficult. Or expensive. Just a small investment in these tools - which convert ordinary wide mouth mason jars into versatile superfood machines - quickly pays for itself many times over. Both for your budget and your health. Because Masontops is the leader in producing lids and accessories that empower you to ferment and sprout veggies (or simply store healthy foods and beverages) in mason jars. Like our sprouting and veggie fermenting lids, our kefir caps are thoughtfully designed to make each step along the way simple and low maintenance. Each set includes one blue and one green lid so you can tell them apart. And each lid is comprised of two pieces that snap together and each part provides a special function. The clear top part contains a measuring cup you can fill with your kefir starter grains. The bottom has a sieve top that keeps the grains in the jar when you're pouring out your finished kefir. Simply add milk or water to restart a ferment. And it so easy to get started. Measure and pour your grains in the jars and add liquid. Simply twist the assembled lid to the open position to allow air to circulate the fermentation process to begin. Depending on your ratios of liquid to grains and the temperature at which fermentation takes, you'll have your probiotic-rich beverage ready to drink in one to three days. Once it's ready, simply turn the cap to the closed position for storage or spill-proof handling. This set of two Kefir Caps ensures you can always have this healthy superfood on hand every day. Your tummy will thank you!
Your Home Kefir Machine
This mason jar lid set will make always having this tasty probiotic-rich beverage on a hand a simple job. With this one set you can always have two jars of kefir on hand, one ready to drink-and-one brewing. Why spend big bucks at a store for kefir when you can make it so economically at home?
Kefir Made Simple
This mason jar lid set will make always having this tasty probiotic-rich beverage on a hand a simple job. Making kefir is as easy as measuring out your grains in the cap, adding your milk or water and replacing the cap. Simply twist the cap open or closed to ferment or store your kefir.
Easy Pour Straining Lid
It's quick and easy to pour your kefir with Masontops Kefir Caps all-in-one-lid system. Just pop off the clear top portion of the cap and boom, you've got a custom-designed strainer. Just pour the liquid out while keeping your living grains inside so they're ready to start the next batch!
Probiotics For Life
Kefir contains healthy probiotic beneficial flora - and vitamins and protein too. It can be made with water, cow's or goat's milk, and non-dairy milk alternatives such as coconut or rice milk. Imagine being able to use any of these liquids to make your kefir at home. And so much cheaper than buying it in stores!
Part of an Award-Winning Brand
A Custom Fit Every Time
You can be sure you're getting the real deal when you buy a Masontops wide mouth mason jar lid or accessory. It will screw on securely and perform the job we've designed it for. All of our premium quality mason jar tools are professional grade, and perfect for beginners and experts alike!
From the Mason Jar Experts
Whether you're looking for a simple jar drink top, a food storage lid or a tool that will turn an ordinary wide mouth mason jar into a seed sprouter, vegetable fermenter or kefir or kombucha maker, we've got your jars covered! And they're made of durable dishwasher and food safe plastics. Save money and make healthy probiotic food at home with Masontops.
Part of an Award-Winning Brand
Masontops focuses on making accessories for Mason jars, with a special emphasis on health and wellness. Founded in 2014, Masontops has been recognized as Canada’s 8th Fastest Growing Start Up and has since grown to offer hundreds of different products under the Masontops, Breadsmart and Dinneractive brands. Headquartered in Toronto, Masontops strives to offer quality, unique products, all designed in-house.
Ortona
September 3, 2025
This is a great product ! Easy to use, keep clean and works the way it should when making kefir (milk or water) - very satisfied with purchase
Think411
July 7, 2025
Love these lidsI used to have to strain the kefir with another strainer and it was a mess to not only clean the strainer but get the kefir to go into the jar below under the strainer.These lids allow me to screw right onto the jar and strain kefir right into another jar without the messAlso comes with a lid to protect the strainer while in the fridgeGreat idea and solved my kefir straining mess
janchan
June 20, 2025
Perfect for my kefir jar! Wide mouth lid is so easy to use.
gccoyote
June 2, 2025
If you like your milk kefir to ferment for longer and it gets very thick, the lid holes are too small to strain the kefir from the kefir grains.
Hakako
May 26, 2025
Super useful and easy to clean. They are perfect fit to jars and very sturdy. Maybe a better locking system is needed for the next design.
KDA
May 21, 2025
I think this would be great for water kefir, which is of a thinner consistency, being just sugar water, and with smaller grains that don't clump together or create curds. Unfortunately, I've been trying to use it for a couple of days with my milk kefir, and it's frustrating enough I'm not sure I'll keep it. Milk is thicker than water, and thicker still once fermented. The grains themselves are somewhat big, they tend to clump together, and the milk forms a certain amount of curds when culturing.This is an ingenious setup, enabling you to twist the lid slightly open while the ferment is active, then closed for storing or shaking (my attempt to break things up to enable better straining) and is entirely removable for straining and pouring. But that's where the difficulty comes in--straining and pouring. Cultured milk kefir does not easily flow through these very small holes, especially as they are instantly blocked by the grains and curds that surround the grains. I tried closing the unit and shaking hard to break it all up, but I still find I need to pour a bit out, pull back and shake it more or rap it against the counter to dislodge everything blocking the filter, then pour/shake some more out, etc. I need to do this a whole bunch of times even when I only have a cup or two of milk, and my kefir is not over-fermented. This really needs bigger holes.
Jeff Mullen
April 29, 2025
clever design with a perforated pouring lid, and then a second lid which can either be sealed, to allow agitation, or left open slightly to allow fermentation gases to escape. Works well.
DressageLoon
March 31, 2025
I happened to see these lids while looking for water kefir grains. I like the idea of the 'cap' being used to keep out microbes while letting the kefir breath. The holes are the perfect size- large enough to allow for quick pouring but small enough that the grains do not escape.
Guadalupe M.
March 19, 2025
Para la fermentación de búlgaros me encantó el colador que trae
Marilyn S. Martel
February 18, 2025
Very handy and useful in making Kefir. Fits standard Mason jar securly and with rubber seal inside, there are no leaks or spills. The lid opens to either remove completely (when pouring) or when making kefir - giving the required air without allowing dust or any contaminant into the jar. Pouring from the jar is very easy, by removing the opaque cap - and it strains at the same time. Very easy to clean Highly recommend
Emilia
January 29, 2025
Ich habe lange recherchiert nach einem passendem Glas und habe mir nun ein Glas bestellt von der Firma Bormioli, Quattro Staggioni. Alles paßt und ist dicht. Mit Kefir geht es ganz gut, nur sollte er nicht zu lange reifen, sonst wird es schwierig.
Nada algamdi
January 22, 2025
استخدمها من اجل البكتيريا الناÙعه وهي جدًا مريØØ© وجيدة الصنع وممتازه
Client
January 16, 2025
Le matériel est correct, le système de fermeture bien pensé. Par contre je le retourne car je n'ai pas trouvé de pots d'un litre, ayant le bon diamètre.
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