Potions, food, elixirs, and even keys are all examples of items that could be referred to as "consumables" in Diablo 4. They're used to give the character bonuses to defense, certain spells, and abilities, as in something the character eats or drinks, but it can be anything that disappears after it is used. Any class can make use of elixirs, but there are some that a Sorceress should always have in Diablo 4.