Processing of Red Velvet Cake Using Natural Dyes of Red Bitter Fruit (Beta Vulgaris) And Red Spinach (Amaranthus Tricolor Linn). Agricultural Science, [S. l.], v. 4, n. 2, p. 126–132, 2021. Disponível em: http://agriculturalscience.unmerbaya.ac.id/index.php/agriscience/article/view/55. Acesso em: 31 jul. 2025.