I did an amazing InterRail trip to France and Spain, with some friends from Italy, back in 2002. It was our first backpacking experience, I remember we stuffed our backpacks with packs of pasta (the proper type, not the "ready to cook" one), jars of tomato, salt, garlic, peperoncino, and olive oil. For 4 weeks of nomadic camping, our diet was mainly that, plus the sporadic tuna can or chorizo to reintegrate proteins. One of those trips you can only survive when you're 19. It was the early times of the Euro, I remember how magic it felt going to a foreign country and buying grocery in cash without having to juggle currencies. Memory unlocked.