When, exactly, is the best time to harvest a tomato for perfect flavor? According to expert Lois Hole, “tomatoes have the best flavor when picked just before they’ve reached their color peak.” If left on the vine until soft sugar and acid will decrease, degrading the flavor. The wonderful little book called Lois Hole’s Tomato Favorites (Lone Pine, $12.95) is filled with growing information, recipes, facts and folklore with color pictures and quick reference charts.