Scenario: 1967. Moscow area, early January. Russian male, in a powerful but -- uh, unofficial government role, has brought his eight-year-old son to his dacha in the countryside. Although he's in a state of profound bewilderment and excitement, the father attempts to care for his son alone, and that includes preparing some kind of meal for them.
Considering the time, place, and people involved, what is something that he could be reasonably expected to prepare himself, with foodstuffs available in a dacha's kitchen? I might be wrong, but I can't picture him making caviar for him and his kid. The father grew up in a rural environment, if that would make any difference.