Prepare the olives. Drain the olives thoroughly and place them in a clean, sealable container or glass jar.
Make the marinade. Add the sunflower oil, balsamic vinegar, light soft brown sugar and honey to a small saucepan. Add the garlic, rosemary, thyme and some black pepper.
Heat gently. Warm the marinade over low heat for approximately 5 minutes. Stir until the sugar and honey have dissolved. Do not allow the marinade to boil.
Allow to cool. Remove the saucepan from the heat and let the marinade cool for approximately 10 minutes, until lukewarm.
Marinate the olives. Pour the lukewarm marinade over the olives and toss thoroughly to coat. The olives themselves are not heated or cooked.
Allow the flavours to develop. Seal the container or jar and refrigerate for at least 24 hours, preferably 48 hours. Toss the olives several times during marinating to ensure they all come into contact with the marinade.
Serve. Remove the olives from the refrigerator 20–30 minutes before serving. Toss again and taste to see whether additional pepper or salt is needed. Serve with a little of the marinade.
Notes