Grind the musk in powder with one teaspoon sugar.

Wash, peel and core the apples. Grate the apples.

Put the seeds in a cloth to use while cooking.

Layer the sugar and grated apples in a glass bowl.

Boil the seeds with one cup of water until the water becomes half. Take off the seeds and pour the water onto the apples.

Cover with a sheet and leave for 2 hours.

Pour the mixture into a pan. Bring slowly to a boil.

Add the lemon juice, musk and vanilla.

Boil for 25 to 30 minutes, skim the froth from the surface.

Ladle the hot jam in a jar. Close the cap tightly.

Turn the jar upside down and leave until becomes cold.