Prevent the darkening of a just peeled potato by cooking it immediately or placing it in cold water until ready to use.
To prevent a peeled potato from falling apart during cooking, soak in cold salt water for 10-15 minutes prior to cooking.
Add a little lemon juice or a teaspoon of vinegar to the water when boiling potatoes to prevent them from discoloring.
When cooking potatoes to use in potato salad, add a little vinegar to the water when boiling the potatoes. The vinegar causes the potatoes to form a thin crust, which helps them hold their shape.