The bright blue petals from the flowers of the butterfly-pea plant have been used as an ingredient in herbal tea drinks throughout the region for centuries as well as used in cooking. The blue flower imparts its blue color when steeped in warm or hot water, leading it to being used as a dye, as well as to add color to various foods such as the rice dish Nasi kerabu. This plant is a vigorous, trailing, scrambling or climbing tropical legume. Its sparsely pubescent stems are sub-erect and woody at the base and may be up to 5 m long. You will need space and a trellis/structure to accommodate it's climb.