Prepare the jars and lids by washing them in hot soapy water or in the dishwasher. You’ll need six 8-ounce jars (or the equivalent) if using other size jars. (If canning this jelly with the hot water bath method, follow instructions for sterilizing jars.)
Add the Certo and lemon juice and bring the mixture back to a rolling boil, stirring constantly. Cook for exactly 1 minute, stirring frequently. Add the food coloring, if using, and stir until well combined.
See Café Tips above in the post for more detailed instructions and tips.
Recipe yields 6 8-ounce jars of jelly.