Believe it or not, these colourful ang ku kuehs are 100% natural. They are made from different types of sweet potatoes, that's why they have beautiful purple, orange and yellow hues. I am stoked by the different flavours available as well: from savoury hei bee hiam to sweet tau sar. Pictured are the hei bee hiam, durian and salted egg yolk flavours in beautiful interesting shapes.