For most people making cheese at home, tablets are the easier thing to keep and liquid is the easier thing to measure. Tablets keep longer in the cupboard and need dissolving before use; liquid rennet is measured out in drops and wants the fridge. Neither makes a better cheese, and neither is harder to use once you have done it once. The choice only really matters if you are buying rennet separately and thinking about how often you will actually make cheese. If you are working from a kit, the decision has been made for you, and the quantities come with a measuring guide.
What is the difference?
Both forms carry the same working ingredient: an enzyme that coagulates milk, turning it from liquid into curds and whey. The difference is presentation.
Rennet tablets are a solid, usually small and scored so they can be broken into halves or quarters for smaller batches. Liquid rennet is the same enzyme held in solution, so it is already dissolved and ready to be counted out drop by drop.
That single difference in form drives everything else: how long each keeps, how you store it, how precisely you can measure it and how much preparation stands between you and a pan of warm milk.
Which keeps longer?
Tablets, comfortably. A solid tablet is stable in a way a solution is not, which is why tablets are the format you tend to find in a kit meant to sit on a shelf until somebody feels like making mozzarella.
Liquid rennet is a fridge ingredient. Kept cold and sealed it is perfectly reliable, but it loses strength faster than a tablet does, especially if it has been left out on a warm worktop or opened and reopened over a long season of occasional cheese making.
This is the honest deciding factor for a lot of home cheese makers. If you make cheese most weekends, a bottle of liquid rennet gets used while it is at its best. If you make cheese four times a year when the mood takes you, a tablet in a cool, dry cupboard is the friendlier option.
Which is easier to measure?
Liquid, if you want fine control. Counting drops is straightforward and lets you scale a recipe down to a small batch without much arithmetic.
Tablets need a little more care. A quarter of a tablet is easy enough to break off, but a sixth is not, and a tablet crushed unevenly gives you an uneven dose. The usual solution is to dissolve a known fraction in a measured amount of cool water and then use part of that, which works well but is an extra step at the sink.
Both routes end up in the same place: a small amount of rennet dissolved in cool, non-chlorinated water, stirred gently but thoroughly through the milk. Even liquid rennet is normally diluted in a little water before it goes in, so that it disperses evenly instead of setting one corner of the pan first.
How do you prepare either form properly?
The rules are the same whichever you have, and getting them right matters more than the choice of format.
- Use cool, non-chlorinated water. Cooled boiled water or bottled water is ideal. Chlorine straight from the tap can weaken the enzyme before it ever reaches the milk.
- Mix it fresh, just before you use it. Rennet solution prepared an hour early is not the same solution by the time it goes in.
- Stir gently but thoroughly. Thoroughly, so no pocket of milk misses out; gently, so the setting curd is not torn apart while it forms.
- Then leave the pan alone. Movement during the set gives a weak, ragged curd.
- Check for the clean break. Dip a knife or finger in at an angle and lift. A clean split with clear whey means cut; a ragged split with milky whey means wait.
Get those five right and the difference between tablet and liquid disappears entirely.
Which comes in a cheese kit?
Our kits supply the rennet ready to use with a measuring guide, so a beginner never has to work out a dose from a general rule. It is a vegetarian rennet, a microbial coagulant from Rhizomucor miehei, so the cheeses you make are suitable for vegetarians.
The Cheese Making Kit for Beginners covers five fresh cheeses including mozzarella, ricotta and mascarpone, with the rennet, citric acid and cheese salt in the box. You add fresh whole milk, never UHT, plus a stainless steel pan, a slotted spoon and a colander. The first cheese takes about an hour.
Whichever form of rennet you end up buying later, the thing that stays with you from a first kit is the technique: the temperature, the stillness, the clean break, the gentle hand on the curds. That transfers to any rennet on any shelf.
What about the cheeses that need no rennet at all?
Worth remembering before you buy either. Ricotta, paneer and queso blanco are acid-set: warm the milk, add citric acid, and the curds form almost at once. No rennet, no tablets, no drops.
They are the most forgiving cheeses to start with, and they are the reason a kit includes citric acid alongside the rennet. If your first attempt at a rennet-set cheese disappoints, making a ricotta the following evening is a good way to rebuild confidence, because it works almost every time.
Rennet format FAQs
Is liquid rennet stronger than tablets?
Neither is inherently stronger. Strength depends on the product, which is why you follow the dose on the packaging or in your recipe rather than swapping one for the other by eye.
Do rennet tablets need to go in the fridge?
Tablets are generally happy in a cool, dry cupboard away from direct sunlight, while liquid rennet wants the fridge. Follow the storage line on the packaging you have.
Can I dissolve a tablet in advance?
Better not to. Mix rennet fresh in cool, non-chlorinated water just before you stir it into the milk, because a solution left standing loses strength.
How do I split a tablet for a small batch?
Break it along its scoring for halves or quarters. For anything finer, dissolve a known fraction in a measured amount of cool water and use part of that solution.
Which form does a beginner kit use?
Our beginners cheese kit supplies the rennet ready to use with a measuring guide, so there is nothing to work out on your first batch.
Fancy making mozzarella this weekend? Browse our cheese making kits.
