Put 1 tablespoon of sea salt into the bottom of a large, pre sterilized jar. Holding a lemon over a plate to catch any juice, cut it in quarters, but do not
cut all the way through - stop about a ½ in ( 12 mm ) from the end, so that the quarters are still joined. Remove any pips. Pack 1 tablespoon of sea salt into the lemon, then close the sections up again
around the salt and put the lemon in the jar. Repeat for 6 more lemons packing them in tightly, and pressing down each layer down hard to expel any air before adding the next layer until the jar is full.
Squeeze the remaining 2 lemons to extract all the juice and pour into the jar. Sprinkle with more coarse salt and top up the jar to about ½ an inch (12 mm) from the top. Add a ¼ inch layer of olive on the
top when cool.
Once opened these lemons will keep, un-refrigerated for up to 1 year.