Steep florets in hot boiling water for overnight, strain and discard florets. Liquid will change color from purple to browning.
Pour liquid into a pot, add in lemon juice and pectin, stir to combine, bring to boil. Once it starts boiling, stir in sugar til dissolved and being it back to fully boil, cook for 10-15 minutes until setting point. Once awhile stir mixture and scoop out foam.
Meanwhile, bring water in a large pot to boil. At the same time, boil lids of the jars in another separate pot.
2 mins before 15 mins is up for the jelly, rinse jars and keep it wet. Using microwave, sterilize jars by heating it at full power for 1 minute.
Take out jars, turn of stove, and pour jelly into jars. Cover with the hot lids tightly, then place filled jars in hot boiling water of the large pot, boil for 15 minutes.
Take out jars and place on clean dry kitchen towels, let stand to room temperature.
Great for toast, English muffins, and croissants too 😊