agar is a crossword puzzle answer that we have spotted 12 times. seaweed Meat jelly Jelly medium Seaweed jelly petri-dish gel Gelatin substitute Get used to grow bacteria Vegan's gelatin substitute Jelly used in bacteria culture Jelly got from seaweeds, used in foods Thickening substance obtained from seaweed Gelatinous carbohydrate obtained from seaweed