“The Effect of Various Comparison of the Proportions of Seaweed (Eucheuma spinosum) and Gelatin on the Characteristics of Roselle Jelly Candy (Hibiscus sabdariffa L.): Pengaruh Berbagai Perbandingan Proporsi Rumput Laut (Eucheuma spinosum) dan Gelatin Terhadap Karakteristik Permen Jeli Rosela (Hibiscus sabdariffa L.)” (2021) Procedia of Engineering and Life Science, 1(2). doi:10.21070/pels.v1i2.1043.