It is the ingredients.

Clean the pumpkin, put into a bowl and covered with a transparent film (or a lid), cook in the microwave, until soft.

Slightly warm the milk in a microwave. All four ingredients mix well in a blender until smooth.

Be sure to strain (to avoid foam).

Pour into cups (the same height, but I was different, so was prepared at a time), cover with foil.

At the bottom of a wide pot put a kitchen towel, he put on the Cup, pour water so much that a little (about one-eighth) do not reach the edge of the cups, cover the saucepan with a lid and bring to boil. When the water boils, reduce the heat and keep for 1 minute, then turn off the heat and simmer for 15 minutes. To check if frozen pudding. To serve chilled.

You should get something like solid jelly.