How was it then, Rich? Sam's got a point on paper, but I've got a very high tolerance for kalamata olives and mackerel's a sturdy enough fish to handle it, I think. It does call for a generous hand with the lemon, though. Talking of punchy savoury flavours, I reckon my sandwich yesterday probably walks away with the Most Middle-class Lunch prize: houmous with salsa verde and roasted vegetables...
You can take the girl out of Surrey but......

I chickened out on the olives and went for breadcrumb, thyme, lemon and onion stuffing served on a bed of roasted beetroot, squash and parsnips.
Would have been better if I hadn't undercooked the fish! Doh!