What is the legal test for disqualification of a judge for making comments not based on an extrajudicial source?

Judicial rulings and remarks not based on an extrajudicial source "almost never constitute a valid basis" for recusal. In the end, it is fundamentally a question of degree. Disqualification is warranted only when judicial rulings and remarks not based on extrajudicial sources rise to "such a high degree of favoritism or antagonism as to make fair judgment impossible." Liteky v. United States, 510 U.S. 540, 555, 114 S.Ct. 1147, 127 L.Ed.2d 474 (1994).

A trial court's denial of recusal is reviewed for abuse of discretion. Yagman, 987 F.2d at 626.