Ingredients
Scale
- 150 g of butter, at room temperature (about 5.3 oz)
- 150 g of sugar (about 5.3 oz)
- 1 egg
- 1 egg yolk
- 1 teaspoon of vanilla extract
- Lemon zest, to taste (optional)
- 350 g of self-rising flour (about 12.3 oz)
- 1 pinch of salt
- 500 g of quince jam (dulce de membrillo) (about 1.1 lb)
- 2 to 3 tablespoons of water (to soften the quince jam)