In a medium saucepan, set over medium heat, pour in 2 tablespoons of olive oil. When the oil is hot, drop in half of the onions and cook until they're translucent, about 5 minutes. Add the ground beef, salt, garlic clove and mix until the meat has browned, about 5 minutes. If you're using leaner ground beef than what's noted above, you may need to add a teaspoon or two of olive oil so it doesn't stick to the pan.