1.Perfect solubility 2.100% Natural food grade 3.Superior quality& Competitive price 4.Kosher,Halal ISO certificate Purple Sweet Potato Color/natural food colouring : Purple Sweet Potato Color, a pure natural and water soluble food color produced by our company, is extracted from purple root tuber of edible purple sweet potato (Impomoea batatas ) planted locally. The process is checking, washing, ...