All mousses have two main components:
- The purée base, which in a savory mousse may consist of cooked or smoked seafood, cooked or smoked poultry, smoked meats, cooked or raw vegetables, or cheese. To ensure proper mixing and achieve a silken texture, the purée base must be very smooth. It must also be full-flavored and highly seasoned, because its flavor is diluted with the addition of the lightening ingredients.
- Lightening ingredients (or lighteners) in a savory mousse are whipped cream and/or beaten egg whites. Their purpose is to capture air and give the mousse a light, fluffy texture when incorporated into the purée base.