When purchasing soup ingredients, it is important to check that they are in a good condition. No parts should be rotten or have gone bad, especially if using older vegetables. Soups often contain a wide variety of vegetables so it is important to consider the availability of ingredients – some might be seasonal.
When trying out a new recipe, it is important to start small (i.e. adding a very small quantity of the ingredient to a widely popular soup). Factors such as the consistency of the soup, the taste, colour and overall nutritional value must be considered when buying ingredients.