Are there any differences in characteristics between individuals who prefer their own traditional foods and those who prefer sampling the traditional foods of other cultures? (e.g., Would varying along a continuum of "xenophobic" to "xenophilic" correlate with food preferences?)

What dishes would constitute "ethical comfort food"?

At each age, when should people eat and how much food? (i.e., frequency of fasting and length of time spent consuming food)

Do couples who are "in love" begin to prefer food prepared by their partner? Does food that is more rich in calories and nutrients demonstrate added investments of parental care?