I had one in my teen years and did not have much luck with it outdoors. Worked best if you got it fairly warm on coals, cooked your waffle on residual heat, then returned it to coals to reheat for the next waffle. I am partial to cornbread waffles, work as breakfast or with chili meat and beans on it.
1 1/2 cups AP flour
1 1/2 cups cornmeal
1/4 cup sugar
1 tsp baking soda
1 tsp baking powder
2 cups milk
2 eggs-beaten
2 Tbsp oil
Mix dry ingredients together. In separate bowl, blend wet. Combine and let sit for about 5 minutes before cooking them, will make them lighter. Great with corn syrup, molassess, maple syrup. Or with refried beans, salsa, meat and cheese.