

Small-cut potato cubes, lightly oiled and oven roasted until the edges turn crisp. In French cooking, parmentier usually means diced potatoes, and that’s the idea here: neat little pieces rather than wedges or mash. They come as a frozen side, meant to go straight into the oven from chilled storage, and they sit alongside other M&S frozen potato options like wedges, chips and mash. The texture depends on the heat and spacing in the tray, so they cook best when given room to roast rather than steam.

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