1/2 cup Dawn or Joy liquid dishwashing detergent
4 1/2 cups water
3 to 4 tablespoons glycerin
In a large plastic bowl mix all ingredients gently so that foam doesn't form on top of the water. Skim off any foam that appears because it interferes with bubble making. Knot yarn, string, or twine into loops of different sizes, up to 30 inches in circumference. The larger the loop, the larger the bubble. Let string loops soak for a minute in bubble mix.
Using both hands, grasp the loop at two equally distant points and lift it gently out of the water with both sides of the string drawn taut. Open the strings about 1/2 inch apart, keeping the string taut. Lift this string form into the air, and a giant bubble will appear. Label the bubble mix and store it tightly sealed.
This recipe can be doubled or divided, as needed.