Vinegar
Vinegar is a liquid consisting of about 5–20%acetic acid (CH3COOH), water, and other trace chemicals, which may include flavorings.The acetic acid is produced by the fermentation of ethanol by acetic acid bacteria.Vinegar is now mainly used as a cooking ingredient, or in pickling. Historically, As the most easily available mild acid.
Sodium bicarbonate or Baking Soda
The natural mineral form is nahcolite. It is a component of the mineral natron and is found dissolved in many mineral springs. It is among the food additives encoded by the European Union, identified as E 500.
Food coloring
Food coloring, or color additive, is any dye, pigment or substance that imparts color when it is added to food or drink.