Bread yeast, 2-3 grains of it. It'll do even better. On the order of 2x the size, to the naked eye. First food for fry. I've used them for cichlid fry for up to a week in age.
Grindal worms are the easier of the two to raise.
Striper nods his head in understanding. I sprinkle it on the surface. Especially house mites, which are a small, round brown insect that most fish don't eat. When the mites show up, think about starting a new culture. But they last awhile, esp. if you use the earthworms - a year isn't unusual for me.