Doughnut
1 cup milk, warmed to about 43˚C
2 ½ tsp active dry yeast or instant yeast
¼ cup sugar plus 1 tsp
½ tsp salt
1 large egg, lightly beaten
4 tbsp unsalted butter, melted
3 cups plain flour
Oil spray
½ cup caster sugar
Filling
Jam of your choice
Tatua Dairy Whip