The invention relates to a metal coating for a utensil for cooking food products. The coating consists of an aluminum-based alloy containing more than 80% by weight of one or more quasicrystalline or approximant phases, having the composition Al.sub.a(Fe.sub.1-xX.sub.x).sub.b(Cr.sub.1-yY.sub.y).sub.cZ.sub.zJ.sub.j in which: X represents one or more elements isoelectronic with Fe, chosen from Ru and Os; Y represents one or more elements isoelectronic with Cr, chosen from Mo and W; Z is an element or a mixture of elements chosen from Ti, Zr, Hf, V, Nb, Ta, Mn, Re, Rh, Ni and Pd; J represents the inevitable impurities other than copper; a+b+c+z=100; 5.ltoreq.b.ltoreq.15; 10.ltoreq.c.ltoreq.29; 0.ltoreq.z.ltoreq.10; xb.ltoreq.2; yc.ltoreq.2; and j<1.