Minerals: Blackstrap molasses are unusually rich in iron! Only 1 Tbsp of Swanson Organic Blackstrap Molasses has 20% DV for iron (Nutritional labels use 18mg RDA for iron), so 20% is 3.6mg.
Dr Greger: The Healthiest Sweetener (5 mins, 2009) by Dr Greger compares 12 different sugary substances from the perspective of their 'antioxidant power'. Dr Greger concludes that dates and blackstrap molasses are the only two healthiest sweeteners. Dr Greger's original video from 2009 is no longer available at Nutrition Facts. However, the page on Sweeteners mentions
Are blackstrap molasses used in recipes at Nutrition Facts? Yes! Recipes in which Dr Greger uses blackstrap molasses as an ingredient: Date syrup, Umami Sauce and Umami Sauce Redux.
(5 mins) Transcript. Dr Greger compares 12 sweeteners: agave nectar, blackstrap molasses, brown rice syrup, corn syrup, date sugar, dark brown sugar, light brown sugar, maple syrup, honey, raw cane sugar, plain old sugar sugar, or turbinado sugar. He concludes that the two healthiest sweeteners are dates and blackstrap molasses.
Accompanying article: (2013) Is There a Safe, Low-Calorie Sweetener?