Wash and peel the rhubarb. Cut the rhubarb into small pieces. Add sugar, lemon juice and water together with the rhubarb pieces in a pot and cook for about 10 minutes on low heat.
Meanwhile, wash the strawberries and add it to the rhubarb compote mixture. Cook for another five minutes, then set aside. Roughly puree compote with a blender.
For the creamy layer mix mascarpone, curd, sugar and vanilla bean paste by using a whisk. Beat the whipped cream until stiff and carefully fold it in.
Put some strawberry-rhubarb compote in a small bowl. Optionally mix in 1 tablespoon of Cointreau.
Divide the wholemeal ladyfingers in half, dip them into the compote-cointreau mixture and layer on the bottoms of the jars. Spread the cream and strawberry-rhubarb compote on top. Repeat the process until the glasses are full. Finish with compote, fresh strawberries and lemon balm.
Store the tiramisu in the fridge for about 4 hours so that the biscuits can soak through. Serve directly from the fridge!