Reply To: Cooking water

I thought of a couple of related questions.

3. A kettle of hot water is placed on the same, non-adjustable hotplate prior to Shabbos. Early Shabbos morning, the electrical power goes off, and stays off for several hours, causing the water to cool to room temperature. The electrical power comes back on Shabbos afternoon, and reheats the water. Can the reheated hot water be used during Shabbos?

4. If a container includes both cold dry food and cold liquid (fully cooked prior to Shabbos), is it subject to the restriction against reheating liquids? Does it depend on the relative percentage of dry food vs. liquid?