Abstract: A cooking assembly comprising a countertop (6) and an induction cooking device (1) attached to the bottom (8) of the countertop (6). The induction cooking device comprises: an induction coil formed from a wire having a substantially uniform non-circular cross-section which is higher than it is wide and which is at a distance (d6) from a top surface (7) of the countertop between 10 and 50 mm, said induction coil having an outer diameter and an inner diameter which is at least equal to 40% of said outer diameter; a generator (15, 16) configured to supply an AC current to the induction coil with a frequency between 30 and 80 kHz; and a magnetic flux concentrator disposed underneath the induction coil and covering at least 50% of the bottom of the induction coil and having a relative magnetic permeability of at least 1000.