Rinsing food and Refreezing

[xtreme]

I know numerous people who have made homemade mixtures including myself. I thawed everything out briefly so I was able to mix it up. Then it was promptly re-frozen. I was a little hesitant to do this but I didn't see any ill effects with my fish. Not sure of other peoples methods but I don't see how you could mix various foods or pre-rinse in your case without thawing them?