Pour the can of nance with its syrup into the blender at medium speed and puree it. Remove the seeds.

In another bowl, mix the flour with water and then the nance puree.

Add the butter and eggs, beat until smooth.

Add the mixture to a baking pan, preheat the oven to 350 degrees and bake for 30 minutes. 

You are now ready to serve it with whipped cream, mint leaves and, if you want, an additional nance.