wnissen wrote:assuming the probes are food-safe
Walt, I would think the probes are pretty much inert but would it really matter? If the food is vacuum-sealed in a plastic pouch and the probe is in the water, it seems like probe and food would never meet.
This set-up, by the way, is essentially the same that home winemakers have been known use to make white wine. Room temperatures are fine for red wine but white wine wants to be cooler, like in the 50's (F). Thermostats in refrigerators generally can't be adjusted above food storage temperatures in the 30's. So just as a crock pot is too warm for sous vide, a fridge is too cool to make white wine. So home winemakers use essentially the same setup to control temperatures in the refrigerator.