>>21441981And since you showed some interest, I'll reinforce the secret. You want the water bath outside the jar to get high enough to reach the top 1/4 of the rim of the jar. You want to size your jar so it doesn't take a bunch of broth to fill it up. Preheat the jar over the desired temperature, it takes an extra twenty minutes. Glass is fairly insulating, surprisingly enough. Watch out for contamination as you put the chicken in.