To prevent eggplants from browning after cutting, immediately soak them in a bowl of cold, salted water or brush them with lemon juice. This inhibits oxidation, which causes the discoloration.
Eggplants brown quickly after being cut due to a process called enzymatic browning. This occurs when enzymes in the eggplant are exposed to oxygen, leading to oxidation and the formation of brown pigments. Here's a step-by-step guide to prevent this:
Prepare a Solution: Fill a bowl with cold water and add about 1-2 tablespoons of salt per quart of water. Alternatively, prepare lemon juice by squeezing fresh lemons.
Cut the Eggplant: Cut the eggplant as needed for your recipe.
Immediate Immersion or Application: Immediately submerge the cut eggplant pieces in the salted water solution, ensuring they are fully covered. If using lemon juice, brush the cut surfaces thoroughly.
Soak or Let Sit: If using salted water, let the eggplant soak for about 15-30 minutes. This helps draw out some of the bitterness as well. If using lemon juice, let it sit for a few minutes.
Rinse and Pat Dry: If using salted water, rinse the eggplant under cold water to remove excess salt. Pat the eggplant dry with paper towels before cooking.
Don't soak the eggplant for too long in salted water, as it can make the eggplant overly salty and affect its texture. 15-30 minutes is usually sufficient.