Grapefruit good wash and dry.

Cut in half.

Carefully, with the help of a spoon remove the pulp of the grapefruit, not to hurt the skin. Half rinse inside and dry.

The pulp of grapefruit put in a blender.

Grind and strain the grapefruit juice through a strainer or cheesecloth.

In a saucepan pour water, add gelatin and sugar, stir and let stand for 2-3 minutes. The water is then slightly heated, stir until completely dissolved gelatin (follow instructions on dilution of the gelatin). Add water with gelatin grapefruit juice, mix well and pour into halves. For convenience, the halves of grapefruit to put on the glasses and put into the refrigerator for freezing.