No power, no microwave — just a plate.

Aluminium conducts heat far better than air does, so it draws warmth from the room into the frozen pack instead of letting it sit in an insulating pocket of cold air. There is no heating element and nothing to plug in. The listings here claim up to five times faster than simply leaving the food out.

The plates do one job with a bare metal surface. The boards add a chopping side, a grater and a sharpener for a similar price, but the extra functions are also what makes them thick, and thickness works against conduction. If the drawer is already full of prep gear, the plain plate is the honest buy.

Three of the ten are Kssvzz boards sharing 666 reviews across two sizes and two colours, and two are mwellewm boards sharing 299 across two sizes, whose stated dimensions land within a couple of millimetres of the Kssvzz ones. Two more are the Andrew James plate with and without its drip tray. Ten listings, perhaps five distinct products.

The products are ordered by estimated monthly revenue per ASIN, not by star rating and not by bestseller rank. Only products with at least 200 reviews and an average of 4.3 stars were included. This is a small category in every sense: the leading listing takes an estimated £3,188 a month and the tenth takes £414, so the gaps between places are narrow and a single week out of stock would reorder the table.