Mahogany is really a light brown color if left not finished. Well, you can use a wine thermometer that attaches to the bottle. Will your cellar be in the interior of the home and is it adjacent to an outside wall? This famous Loire wine made using Sauvignon Blanc grapes puns a famous wine spot. https://nicolajsen-Osborn.technetbloggers.de/a-wine-lovers-weekly-guide-to-10-wines-a-mexican-petite-syrah-1717623395