Here is the recipe:
60g agar agar strips (or agar agar powder)
7 cups water (1 cup being 225ml)
500 g rock sugar
1 teaspoon rose syrup
White sugar according to taste
1 teaspoon yellow coloring
1/4 teaspoon red coloring (approx)
Cut the agar agar strips into 8cm pieces. Rinse. Bring water to a boil in a large pot. Add agar strips (alternatively, the agar agar powder) and rock sugar. Stir continuously, then lower heat to a simmer. Skim the surface to remove froth. Simmer for at least 3 hours until the syrup thickens.
To test for doneness, scoop some syrup and if it hardens in the ladle, it is likely to start setting into jelly. Add the rose syrup, taste and adjust the level of sweetness by stirring in white sugar if needed.
Add the drops of yellow coloring first. Then add a few drops of rose syrup, stirring and adding enough, until you achieve a golden hue.
Pour jelly into the mould which in turn is placed in a baking tray filled with water. (To deter ants from climbing in). Let the jelly harden at room temperature.