Orange Muffins

Orange pulp from 2 tangerines or 1 big orange (peel, remove seeds and inner membrane and crush it)

orange juice)

egg + 1 yolk

orange zest

and 1/2 stick butter (170g, at room temperature)

and 1/4 cup (250g sugar)

and 1/2 cup (300g all purpose flour)

baking soda

baking powder

salt