While the cake is being baked, you can prepare a fondant mass: 60 g of powdered sugar and 1 tbsp.l. saffron tincture mix until fluid.
The tincture is prepared simply: several saffron fibers should be poured with boiled water (a couple of tablespoons) and allowed to infuse for several hours.
Saffron dissolves better in vodka, but it is better to use alcohol tincture for dough, for fudge you also need tincture on water.