The invention relates to a plate intended to cover or receive induction heating elements, in particular an induction cooking plate, said plate being a glass plate, the composition of which is of lithium aluminosilicate type, said plate having a surface zone of at least 5 [mu]m thick comprising potassium ions as a replacement for the lithium ions of the glass. The present invention also relates to an induction cooking device incorporating said plate and a method for producing said plate.