Nature's Riddle is a Russian commercial variety, originally called the Secret of Nature's (Загадка Природы in Russian). In 2010 the variety was introduced by Baker Creek Heirloom Seeds. The fruits are large, beefsteak type, weighing more than 300 g, irregularly shaped, may vary from round to elongated, the shoulders curved, orange-yellow with a salmon-pink shade, bright red at the top. The flesh is meaty, yellow marbled with a pink vein in the middle. Sweet-tasting and very aromatic tomato. Tends to crack in a humid air. The variety adapts well to regions with short seasons or cool summers.