I got this from a cat-fisherman at the cleaning station......... cut off all fat and dark meat. I cut the larger cats into smaller pieces on the bias before soaking. Soak in cold water with salt and vinegar for about 15 or 20 min. I just guess about 2 or 3 T of salt and about 1/4 c of the vinegar. Agitate to dissolve and mix. Do this 3X then soak 3X again in plain water. I use refrigerated water the last time or two to start the cooling process.