Question: what is the difference between red and yellow turmeric?
Answer: Yellow turmeric and red turmeric are both Curcuma longa, the 'red' being a variant from Papua, but it is generally more deep orange than red. ... Red turmeric powder is mostly yellow turmeric powder reddened due to the addition of iron oxide, and soils high in iron may deepen the yellow/orange hue of the living rhizome.