Which of the following is NOT a hidden source of tree nuts?

Pasta is not considered a hidden source of tree nuts because traditional pasta is made from wheat and does not typically contain any tree nut ingredients. Tree nuts, such as almonds, walnuts, or pecans, are not standard components of pasta recipes.

On the other hand, marzipan and nougat are known to contain almonds or other tree nuts, making them hidden sources for individuals with tree nut allergies. Additionally, barbecue sauce may also contain various ingredients, including nuts in some recipes, particularly if they are using flavors that mimic or complement nuts. It is essential for those with tree nut allergies to be aware of these hidden sources, whereas plain pasta remains safe in this context.