Classic Cheeseburgers with Barbecue Spices

Father's day request was hamburgers -- and this recipe looked interesting because it had one mix in a spice set reminiscent of preparing a BBQ sauce -- chili powder, paprika (I used half smoked and half regular), celery seed, cumin, etc. As I write this, I realize that I forgot to add the brown sugar. The other item of interest is that the recipe tells you to form the burgers with the center inch a bit thinner than the rest (3/4 inch but 1/2 inch in the center) - this is because ground beef tends to swell up on the grill. The burgers were shaped perfectly, and the spice mixture elevated the dish.

Happily, this is easy to make with no kitchen. Cannot find my mortar and pestle, but have learned that one can simply chop cumin seeds to release their flavor.