Uncle O’Grimacey is Grimace’s Irish uncle and every March, around St. Patrick’s Day, he delivers Shamrock Shakes in McDonaldland. Shamrock Shakes Source: Top Secret Recipes-Sodas, Smoothies, Spirits, & Shakes: Creating Cool Kitchen Clones of America’s Favorite Brand-Name Drinks   Ingredients 2 cups vanilla ice cream 1 1/4 cups low-fat milk 1/4 teaspoon mint extract (not [Continue]