How does Mr. Pumblechook's breakfast differ from Pips?

From the following text, we can infer that Pip's breakfast was sparse compared to Mr. Pumblechook's.

Mr. Pumblechook and I breakfasted at eight o'clock in the parlour behind the shop, while the shopman took his mug of tea and hunch of bread-and-butter on a sack of peas in the front premises. I considered Mr. Pumblechook wretched company. Besides being possessed by my sister's idea that a mortifying and penitential character ought to be imparted to my diet - besides giving me as much crumb as possible in combination with as little butter, and putting such a quantity of warm water into my milk that it would have been more candid to have left the milk out altogether - his conversation consisted of nothing but arithmetic.