So I malted 10 pounds of sunflower seeds and dried them. I tried several ways to crack them, and found that a blender worked best.
I mashed 6 pounds of 6 row barley and 3 pounds of sunflower seeds for a 3 gallon batch of beer. The color of the sparge water was gray and not nice to look at. After I boiled and hopped and all that, the color was a very nice brown. The OG was 1.020, which tells me that the sunflower seeds didn't add anything to gravity. I chucked in some light DME to get to 1.040. The amount of sediment was incredible. I cleaned up all the odds and ends of hops in my freezer, so it has 4 different kinds in it.
I pitched Wyeast's American Lager yeast, and after 48 hours there was nothing happening. There was no indication of CO2, and not one little bit of krausen. So I threw a pack of champagne yeast in. It started slowly, and after another 48 hours it's very active. Smells great, too. It's still in the primary as I write this.
I've got several pounds of malted sunflower seeds left if anyone wants some.