Crush the frozen cranberries in a large glass pitcher. Add the lime juice and their juiced wedges to the pitcher. Pour in the vodka, cranberry juice, and ginger syrup. Put ice in low-ball glasses and fill glasses about 2/3 full.
Speaking more generally, the most potassium-rich food sources of potassium are fruits and vegetables. Some legumes, fish, and dairy products can also make important contributions to our daily potassium intake; yet, because these foods have more calories, they are not as highly rated by our Nutrient Richness System.
Bananas do contain potassium, but so does the vast majority of other fruits and veggies. Potassium is the predominant nutrient among most all fruits and vegetables, and there are other foods high in potassium out there. An avocado, for instance, has more than twice as much potassium as a banana and is rich in beneficial monounsaturated fat.