Perfect Guacamole

Name: Perfect Guacamole
Prep time: 15 min
Total time: 15 min
Cuisine: Latin American, Mexican
Ingredients: 1 pound ripe avocados (2 large or 3 medium); 1/2 teaspoon kosher salt, plus more as needed; 1 to 2 medium limes; 2 medium cloves garlic; 1 small plum or Roma tomato; 1 small jalapeño or serrano pepper; 1/4 small white or red onion; 1/2 medium bunch fresh cilantro