Here he found Stephen looking frowsty and discontented - there was nothing that more thoroughly persuaded Jack of his friend's innocence with regard to Mrs Fielding than this three days' beard, this vile old wig - and Stephen said to him 'If the woman does not issue a more Christian invitation in two minutes, I shall drink that,' - pointing to the gunroom's coffee, weak, insipid, only just luke-warm. 'She has asked us to take chocolate with her. Chocolate at this time in the morning, dear Mother of God. Suff on her.
Jack finds Stephen appearing unkempt and unhappy, leading him to believe in Stephen's innocence concerning Mrs. Fielding. Stephen's disheveled appearance, marked by a three-day-old beard and a poor wig, reflects his discontent. He expresses his frustration with the invitation to have chocolate, deeming it highly inappropriate for the morning.
Stephen's comment about the weak and lukewarm coffee further illustrates his displeasure with the situation. His expectation of a more suitable morning beverage indicates a desire for more conventional hospitality, revealing both his character and the tension underlying the invitation from Mrs. Fielding.