Preparing the equipment: Before you start preparing your Lavender jelly, place canner rack in the bottom of a boiling water canner. Fill the canner half full with clean warm water for a canner load of pint jars. For other sizes and numbers of jars, you will need to adjust the amount of water so it will be 1 to 2 inches over the top of the filled jars. Wash jars, lids, and rings in hot soapy water; rinse with warm water.
Sanitize the jars, lids, and rings: Never plunge room temperature jars into rapid boiling water or they may crack. Place the jars in a large pot. Add 1-inch of water to the bottom, cover securely, and bring to a boil for 10 minutes. Keep the jars, lids, and rings in the hot water until they are ready to by used.
Preparing the lavender jelly: In a large saucepan over high heat, bring water just to a boil. Remove from heat, stir in dried lavender flowers, and let steep for 20 minutes. After 20 minutes, strain mixture into a deep kettle or pot, discarding the lavender flowers. Stir in lemon juice and pectin; continue stirring until the pectin is dissolved. Over high heat, bring the mixture to a boil; add sugar. When the jelly solution returns to a hard rolling boil, let it boil for 2 to 4 minutes (see below), stirring occasionally.
2 minutes - soft gel
4 minutes - medium gel
Testing for "jell" thickness: I keep a metal tablespoon sitting in a glass of ice water, then take a half spoonful of the mix and let it cool to room temperature on the spoon. If it thickens up to the consistency I like, then I know the jelly is ready. If not, I mix in a little more pectin (about 1 teaspoon to 1/2 of another package) and bring it to a boil again for 1 minute.
Processing the jelly: Place jars on the elevated canner rack. Lower rack into the canner with the hot water. Add more boiling water, if needed, so the water level is at least 1 inch above the jar tops. Pour the water around the jars and not directly onto them. Cover the canner with a lid. Process in a boiling water canner for 10 minutes (start time when the water returns to a boil). Adjust processing time according to altitude chart below.
Altitude Adjustments for Boiling Water Bath Canner
1,001 to 3,000 feet - 5 minutes
3,001 to 6,000 feet - 10 minutes
6,001 to 8,000 feet - 15 minutes
8,001 to 10,000 feet - 20 minutes
After 10 minutes, remove jars with a jar lifter and place jars upright on a towel or cooling rack to cool completely. Leave at least one inch of space between the jars during cooling. Avoid placing the jars on a cold surface or in a cold draft. Let the jars sit undisturbed while they cool, from 12 to 24 hours. Do not tighten ring bands on the lids or push down on the center of the flat metal lid until the jar is completely cooled.
After jars cool, check seals by pressing middle of lid with your finger (if lid springs back, lid is not sealed and refrigeration is necessary). Put any unsealed jars in the refrigerator and use first.
Label jars and store the sealed jars in a a cool, dry, dark place up to 1 year. Refrigerate any open jars up to 3 weeks.
Makes five 1/2 pints.
Lavender Jelly Recipe - How To Make Lavender Jelly: https://whatscookingamerica.net/lavenderjelly.htm