Many thanks, for all the ideas.
This is what I have done, I basically meshed all the recipies to come up with this:
prepare hearts by removing outer leaves, trimming top of bud, removing choke and halving. After every stage I doused with lemon juice to avoid browning, which happens almost immediately!
Then I cooked in lemony water for about 5 mins (for smallish hearts) until just tender.
After draining, I cut them into quarters, packed into sterilised jars and filled with white vinegar, making sure no air remains.
They were left overnight, drained in the morning and refilled with fresh white vinegar.
At the end of the day (when I get in from work) the jars are drained once again, then I added 2 cloves of garlic, a torn bay leaf and some basil to each jar, then filled with mild olive oil.
The jars were then processed in boiling water for 30 minutes.
The look just right, and my tasters will let me know in due course if they are ok, great or fab (or nasty!) I am not keen on them myself, but am very happy to make pickles and preserves for my friends and family!
Phew.
