Champagne, etc.

Americans tend to reserve Champagne for special occassions. But it's a perfect companion to food and warm weather. While sparkling wine can only legally called Champagne when it's from that region of France, you can find enjoyable, less expensive sparklers such as Prosecco, from Italy, and Cava from Spain.

Which wine goes with everything?

Rosé! Comes closer than anything to going with everything. Cheap too. Try one from just about anywhere.