Place avocados in a bowl and mash to a coarse consistency with fork, potato masher or pastry blender. Stir in lime juice, onion, cilantro or parsley, garlic, hot pepper sauce, and salt, with olive oil and jalapeño peppers if using. Taste and adjust seasonings. More lime juice, salt or hot pepper sauce may be needed. Gently stir in tomatoes. Serve at room temperature.