Originating in the Caribbean before making its way to New England, the switchel has developed into different versions over the years. My exploration has turned up an array of different ingredients and ratios—but, in general, a switchel was likely to contain the sweet, tangy, and spicy combination of molasses, vinegar, and ginger. Together, these components provide valuable minerals and electrolytes, which means that the humble switchel is a great alternative to commercially made sports drinks. Or, if you want to skip the workout and head straight to the bar, you’ll find that rum is a great partner for this bracing concoction.