Pickle Brine & Volume & Salt to Add

Brine volume = vegetable weight × the volume ratio you choose (so the brine covers the produce), and salt = brine × the brine strength (concentration). For example 10 kg of vegetables at a 1.2 ratio gives about 12 litres of brine, and at 10% strength that's roughly 1.2 kg of salt. The tool does both steps for you.

Salt draws water out of the vegetable and out of spoilage microbes, while a strong brine plus the absence of air suppresses harmful organisms. Salt-tolerant lactic acid bacteria then ferment the sugars into acid, lowering the pH. Together the salt and acidity preserve the vegetable and develop the tangy pickle flavour.

It depends on the pickle. Long-keeping Indian salt pickles (mango, lime, chilli) often use 10% or more salt for shelf stability; lacto-fermented vegetables and gherkins typically use lighter brines around 3–6% that allow a livelier fermentation. Stronger brine keeps longer but tastes saltier — pick the strength for your product and climate.

High salt concentrations pull water out of microbial cells and create conditions most spoilage bacteria and moulds can't tolerate, while salt-tolerant lactic bacteria survive and acidify the brine. The combination of high salt, low oxygen and rising acidity is what makes brining a reliable, low-tech preservation method.

It sizes the brine to the vegetables so the produce stays fully submerged — exposed pieces spoil. A ratio above 1 means more brine than the vegetable weight, giving room to cover and weigh down the produce. Use a higher ratio for loosely packed or floating vegetables and a lower one for tightly packed jars.

Use pure, non-iodised salt — pickling salt, kosher salt or plain sea salt. Iodine and anti-caking agents can darken the pickle or cloud the brine, and additives may inhibit the fermentation. Coarse or fine both work as long as it's additive-free; weigh it rather than measuring by volume for accuracy.

Pack them below the brine line and weigh them down with a clean plate, a brine-filled bag or a fermentation weight so no piece touches air. Anything above the brine can mould. Skim any surface scum, keep the vessel clean, and top up with fresh brine of the same strength if the level drops.

Plenty — raw mango, lime, green and red chilli, gherkin and cucumber, cauliflower, carrot, turnip, garlic and more. Firm, fresh produce holds up best. Indian-style oil-and-spice pickles still rely on this salt step for safety; the calculator handles the brine and salt for any of them.

Yes. Too little salt risks spoilage and soft, off pickles; too much salt halts fermentation and makes the pickle harshly salty. The right strength for your product is the sweet spot. Use the calculator to hit a consistent concentration every batch rather than guessing by handfuls of salt.

The brine and salt are exact arithmetic for the ratio and strength you set, but the practical amount depends on how the produce packs, how much brine you need to cover it, and your recipe. Treat the result as your starting batch quantities and adjust the ratio to whatever fully submerges your vegetables.