When I made Nyonya dumplings not long ago, many friends asked me about the blue coloring I used to dye the rice. It is from blue pea flower/butterfly pea flower, it is a natural food coloring with a lot of health benefits.
According to Wikipedia:
Clitoria ternatea, common names including butterfly pea, blue pea, Aprajita, Cordofan pea and Asian pigeonwings, is a plant species belonging to the Fabaceae family.
......Names in other languages include bunga telang (Malay), อัญชัน `anchan (Thai), đậu biếc (Vietnamese), अपराजिता Aparajita in Hindi and 蝶豆 dié dòu (Mandarin Chinese), 'Sankhu Poolu/Sankham Poolu' in Telugu, "Shankupushpam" in Malayalam language and অপরাজিতা (Aparajita) in Bengali.
In Thailand, a syrupy blue drink is made called nam dok anchan (น้ำดอกอัญชัน), it is sometimes consumed with a drop of sweet lime juice to increase acidity and turn the juice into pink-purple.
10-12 dried or fresh blue pea flowers
1 + 4 cups of drinking water
2-3 tbsp of honey
1/2 tsp lime/lemon juice
10-12 朵 新鲜或干的蝶豆花
1 + 4 杯 饮用水
2-3 大勺 蜂蜜
1/2 小勺 青柠/柠檬汁
1. Bring 1 cup water to boil and steep the dried blue pea flowers for 12-15 minutes. Strain the liquid and discard the flowers.
2. Add honey and remaining water, stir well and serve.
3. You can also add a few drops of lime/lemon juice into the drink, it will change the PH level and turn the drink into purple color instantly.
Healthy and beautiful in color, good to serve and surprise your guests!