How to cook a perfect turkey frank: If you are doing a backyard cookout for a big crew, or the family, this is the best way to be efficient—par boil your franks, then grill them. Par boiling for a few minutes will plump them up, then when you get them on the grill you can really turn the heat up and get some color and grill marks on them. Crispy, plump franks for all, ready to be dressed with fun in-gredients.