Ask the clerk, what it is. I'd recomend trying sweet farmer cheese spread with raisins. Russian yougurt like things. I love ryazhenka. It is yougurt made from baked milk. Cold cuts are good, chocolate candies yum, smoked fish, they might have good pastries.
Next time you go just take a picture of every item, post here, I'll tellyou all about.
You are what you eat.