In my case, it's not a sign of depression. I do associate some kinds of food and even restaurants with some of my friends and family members. Mostly, I remember their favorite food or snacks we eat together. Sometimes, when I miss them or when I think of them, I crave these snacks. Whenever I have yogurt, I think of my nephew because that's the first thing he looks for in my fridge when he visits me. I eat it when I miss him. Smint reminds me of my friend who was my business partner before because we always had it when we went to client meetings.