How do you prepare the perfect burger patty?

[Trace63]

I always try to mix it up, but Ive used this recipe a few times and its always a hit.

1 sm Onion, chopped
1/4 ts Cayenne
~2/3 cloves of minced Garlic
1/2 ts Salt
1/2 ts Black pepper
1/2 ts Curry powder
1/4 ts paprika
1/2 ts Dried thyme
Cheese of choice (for the middle)
1 Beaten egg
A touch of Worcestershire sauce

-Kamil