An excellent jam is obtained by boiling 2 parts of quince, 1 part of apples and 1 part of pumpkin until soft, then passing them through a straining machine or hair sieve and boiling down the quantity with 1/2 kg of sugar per 1 kg of fruit so that it falls thickly from the spoon.
From the residues, the peels and seeds, which remained in the sieve during the straining, one can still make a good jelly. For this purpose, the waste is boiled with enough water to cover it for about 15 minutes. The juice is drained through a filtering cloth without squeezing and then boiled down with the sugar (1/2 kg to 1 kg of juice) over a fairly lively fire until jelly is obtained.