Swelter, the chef, is vast and rolling excess to Flay’s ascetic skinniness, and here presents himself in a stupor.  The contrast between them accentuates their mutual hatred. 

See another view of Swelter in his drunkenness, and another view of someone of the same proportions.

‘There was a sound of something spreading as an area of seven flagstones became hidden from view beneath a catalyptic mass of wine-drenched blubber.’ 

Source: Mervyn Peake, Titus Groan, introduction by Anthony Burgess (London: Vintage Books, 1998), p. 29