looks like a good time Crane, I don't usually eat the food when I'm doing any food photography for anyone I don't want them having any sort of "well i gave you the food and drink, the least you could do is...."
You did well with just a speed flash.

Nice composition as well...only thing I'd change it maybe overexposing a bit.
Poster above, you're using frontal flash which flattens out the image, makes it washed out. Bounce the flash, or use a window in the day time.
Also, change the angle, that angle isn't flattering, lower yourself a little. Picture how you see it in your minds eye....you usually sit an look at your food, try a 45 degree angle, slightly tilt the photograph it makes it more inviting. Again, try to avoid that flash if possible.