This is an old fashioned recipe that uses weights in its measurements for the pumpkin/sugar amounts, use your kitchen scale. The pumpkin is weight after its cleaned, prepped and ready to use.

Pumpkin Jam Recipe

5 pounds of pumpkin
4 pounds of sugar
3 lemons sliced thin and finely diced
1 orange sliced thin and finely diced
1 tsp of salt

Peel and cut pumpkin into pieces about 1/4th thick and finely dice or put them in a food processor and chop them finely, place in bowl with the sugar and allow to sit overnight

Remove the pumpkin pieces and bring the liquid to a boil, add the pumpkin, the lemons the orange and salt, cook very slowly on a low heat until thick to your desire, bottle and process for 15 minutes in a hot water bath process.

This is just a yummy, yummy pumpkin marmalade like jam, yes its sweet and has a different flavour.  can be used as a cake filling, or as a tart filling with a dollop of whip cream. Make an outstanding glaze mixed with icing sugar an a touch milk over a pumpkin loaf.