A barbecue grill assembly comprising: a cooking chamber with a cooking surface, the cooking surface having at least two portions including a first portion and a second portion; the first and second portions of the cooking surface each having at least one heat source (360B; 360A) being disposed thereunder; each of the at least one heat source for the first portion having a highest setting, a lowest setting, and an off setting, in which a first maximum heat output is provided to the first portion of the cooki ng surface when set at the highest setti ng, in which a first minimum heat output is provided to the first portion of the cooki ng surface when set at the lowest setti ng; each of the at least one heat source for the second portion having a highest setting, and in which a second maximum heat output is provided to the second portion of the cooki ng surface when set at the highest setti ng; the at least one heat source for the first portion being capable of providing a first maximum heat intensity and a first minimum heat intensity, the first maximum heat intensity being equal to the first maximum heat output divided by the area of the first portion, the first minimum heat intensity being equal to the first minimum heat output divided by the area of the first portion; the at least one heat source for the second portion being capable of providing a second maximum heat intensity, the second maximum heat intensity being equal to the second maxi mum heat output divided by the area of the second portion; the second maximum heat intensity being greater than or equal to the first maximum heat intensity; and, the at least one heat source for the second portion being capable of providing a heat intensity which is approximately equal to the first minimum heat intensity; characterised in that the second maximum heat intensity is equal to 1.1 to 1.3 ti mes the fi rst maxi mum heat intensity. a cooking chamber with a cooking surface, the cooking surface having at least two portions including a first portion and a second portion; the first and second portions of the cooking surface each having at least one heat source (360B; 360A) being disposed thereunder; each of the at least one heat source for the first portion having a highest setting, a lowest setting, and an off setting, in which a first maximum heat output is provided to the first portion of the cooki ng surface when set at the highest setti ng, in which a first minimum heat output is provided to the first portion of the cooki ng surface when set at the lowest setti ng; each of the at least one heat source for the second portion having a highest setting, and in which a second maximum heat output is provided to the second portion of the cooki ng surface when set at the highest setti ng; the at least one heat source for the first portion being capable of providing a first maximum heat intensity and a first minimum heat intensity, the first maximum heat intensity being equal to the first maximum heat output divided by the area of the first portion, the first minimum heat intensity being equal to the first minimum heat output divided by the area of the first portion; the at least one heat source for the second portion being capable of providing a second maximum heat intensity, the second maximum heat intensity being equal to the second maxi mum heat output divided by the area of the second portion; the second maximum heat intensity being greater than or equal to the first maximum heat intensity; and, the at least one heat source for the second portion being capable of providing a heat intensity which is approximately equal to the first minimum heat intensity; characterised in that the second maximum heat intensity is equal to 1.1 to 1.3 ti mes the fi rst maxi mum heat intensity.