This is a fun casual meal to share with a group. Everyone makes their own taco with any combination of toppings they like. Serve black beans and rice along with this to expand the meal.
Place potatoes in saucepan with vegetable broth and water to cover. If vegetable broth is not salted, add salt to the cooking water. Boil until tender but not falling apart. Drain and set aside. Bring a large skillet to medium-high heat, and add oil or vegetable broth. Sauté onion, garlic, Poblano peppers and jalapeño until tender crisp. Add potato slices and grill seasoning to skillet. Cook until potatoes are golden brown. Place on heated platter and serve. Take a warm tortilla and fill with the potato mixture. Additional topping ideas include: Black beans, avocados, salsa, Pico de Gallo, fresh chopped tomatoes, fresh jalapeño, diced onions, shredded lettuce or shredded cabbage.
Poblano chiles are usually not very hot and very tasty. Their flavor improves with cooking.