What goes with Gołąbki?

My sister’s birthday is this weekend and she has asked our mother to make Gołąbki – cabbage leaves stuffed with beef, onions, and rice served with a spicy tomato sauce.

I have been charged with the first course, but need some inspiration to find something that compliments the main. Any ideas???

Ideally, I’d like to do an amuse bouche and first course.