Portland had the most food carts I've seen in any city. They are everywhere in town, and they offer a wide diversity of foods. While I was in town, I managed to squeeze a few in during the days I was there.
In Old Town, I dropped by the Gaufre Gourmet, which made Belgian liége style waffles. The waffle uses brioche style dough not batter, and ends up denser and more rich than regular waffles.
I ordered their ABC Waffle, which is topped with fig jam, camembert cheese, bacon, and arugula. It was really good, particularly the fig jam with the waffle.
Kitty corner to the waffle cart, Korean taco truck, Koi Fusion was parked, so I popped across to give them a try as well.
I ordered their kalbi, short rib, taco and the spicy pork taco. Both were really delicious. The tacos reminded me of the ones from the Kogi trucks in LA, but they were cheaper, and the corn tortillas were more fresh, so they did not have to cook them like they do on the LA truck. Portland win.