For the best flavor, use day-old rice that has had a chance to dry out slightly. This will help it crisp up better in the skillet. Don't overcook the beans! They should be tender but still hold their shape. Feel free to adjust the amount of 'caldo' to achieve your desired consistency. Some prefer a drier Gallo Pinto, while others like it slightly more moist. Lizano sauce is a unique Costa Rican condiment that adds a tangy and slightly sweet flavor. If you can't find it, you can substitute with a mixture of Worcestershire sauce, vinegar, and a touch of molasses. For a vegetarian or vegan option, skip the bacon and fried egg and serve with avocado and plantains. If you like spicy food, add a pinch of chili flakes while sauteing the onion.