In Better Call Saul S05E01, we see Saul Goodman drop his ice cream cone and go with Nacho Vargas. In S05E02, we see multiple scenes of that dropped ice cream, notable the starting one with ants eating (rather attacking) the ice cream. Is it some kind of foreshadowing?
Alan Sepinwall has some thoughts on the symbolism of the ice cream:
the symbolism’s not hard to miss: Jimmy has cast aside something sweet (a relatively honest legal career like the one he had before the war with Chuck) for something destructive, and he’s as oblivious to the carnage he’s starting to cause as the passers-by on the street are to what’s happening down at ant level.
Like when he was removing masking tape from Chuck's wood panelling, Jimmy's taken a shortcut (dumping an ice cream on the pavement, rather than finding a trash can) – albeit this time, under pressure from the cartel – and there are damaging consequences. (Although, thankfully, not for the ant actors.)
Ice cream is also present when
Kim has the fateful idea of discrediting Howard to prompt settlement of the Sandpiper case,
a weekly pint of ice cream during his 90-month prison sentence is the last concession Saul is eager to wring from the government in the series finale.
So I dunno, maybe it's like oranges in The Godfather trilogy, which got a reference in Breaking Bad.