In a cup or mug, mix ½ cup room temperature milk with 1 teaspoon of freshly squeezed lemon juice.
Using a mortar and pestle, crush a few strands of authentic saffron (a little goes a long way) and when slightly powdered, add to the milk-lemon juice mixture. Gently stir and set aside at least 5 minutes. This adds a natural golden yellow color to the cupcakes; no artificial color needed.
Using a ladle, pour or spoon into the lined muffin tin, filling them 2/3rd full.
Bake in the preheated oven for 20-25 minutes until fully baked (a cake tester like a toothpick when inserted into cake should come out clean). Start checking only after 20 minutes.
Remove the pan from oven and cool on wire racks for 10 minutes. After 10 minutes, remove the cupcakes from the pan and cool directly on wire racks to cool completely!