Filipino food is always served with condiments within easy reach, even at a street vendor where you stand and eat. These condiments let diners customize the flavor of the meal in the form of a self-mixed dipping sauce, which is generally known as sawsawan. Diners get individual bowls and use their spoons or forks to mash chiles with vinegar as they see fit, or stir together patis and calamansi, or make whatever sawsawan they prefer. Store this version—an all-purpose sweet-and-spicy vinegar—in clean mason jars or keep it in repurposed glass bottles. Note that this recipe can be adjusted as you like—try using different chiles or other spices like bay leaf.