1 can orange juice concentrate, slightly thawed
1 cup milk (half and half, cream, nut milk, soy milk, vegan milk, etc.)
1/2 cup granulated sugar, or to taste (you can reduce the sugar or use an alternate sugar substitute such as stevia but it won’t taste as close to classic Orange Push-Ups. Many people use much more than 1/2 cup, myself included. I used about 1 cup in my version)
1/2 teaspoon vanilla extract
2 cups ice, or to taste
1 to 2 ounces of Rum, Malibu, Vodka, Citron, Marshmallow Vodka, Gran Marnier or similar, per smoothie portion, or to taste, optional

Combine all ingredients, except ice and optional alcohol, in a large blender or Vita-Mix and blend until smooth and creamy, taking care the sugar has dissolved and is well incorporated. Keep blending until it dissolves. If desired, add a splash more water or milk. Add the ice and blend until smooth. Serve immediately.