a kilogram is 2.2 pounds 0,05 liters is approx 3 tablespoons and a teaspoon 500 grammes is about 17 and 1/2 ounces (a little more than a pound) lemongin will be next to impossible to find in the states this jam will taste infinitely of bananas, if that's what you want. otherwise, i have a nice recipe for peach and passionfruit jam, but not just plain passionfruit. 3# fresh peaches, peeled, pitted and chopped 6 cups sugar juice of one lemon 10 fresh passionfruits, pureed sprinkle the peaches with half the sugar and allow to macerate overnight. bring the sugared peaches to a boil and then simmer about 15 minutes or until the peaches are tender. add the reamaining sugar and other ingredients. bring to a boil again and boil until mixture begins to set (about an hour or so). ladle into jars and process.