Persist Creature does not have a -1/-1 counter on it.
You control your commander.
Steps
Activate
Bloodflow Connoisseur by sacrificing the
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Persist Creature.
When the
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Persist Creature dies, it triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to your commander's ability granted to it by
Master Chef.
Resolve the
Bloodflow Connoisseur ability, putting a +1/+1 counter on it.
Repeat.
Results
Infinite creature LTB.
Infinite creature ETB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Infinite +1/+1 counters on a creature.
Metadata
In 548 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).