Turns out you can deep fry sprinkles. We folded rainbow sprinkles into the trimmings from cutting doughnuts. We let the dough chill again and rolled out the doughnuts. We cut them and fried away.
The sprinkles in the doughnuts browned a bit. Inside they melted into the doughnuts.
The color vibrantly stained the tender interior. And a new doughnut was born.
When we added our frozen custard the doughnut got an upgrade.