How do they jelly in a jelly donut?!
Answers: Some dont have holes how do they do it?!
they pick it in a jelly donut field.
they use a jelly injecter
Now i use to do this when i worked in a bakery, its done with a syringe type machine place the doughnut on the pointed end and press the handle and in goes the jam, remove the said doughnut and eat, yum yum.
a small "syringe" like thing squirts it into the middle
sometimes they make the doughnut in 1/2s and fill before putting together
sometimes they put some kind of powdered sugar to make look like its sealed but its not really surrounded with dough.