RABBIT FOOT

No recipe in Java 26.2 produces it: it drops from husks and rabbits. Between a peaceful animal and an undead mob that only rarely carries it, neither route is a dedicated grind.

A Cleric at journeyman pays an emerald per 2 feet, a cheap trade on its own. What makes it worth planning around is who else stands at that same stall: the same Cleric, at a higher tier, sells ender pearls for 5 emeralds each, so feet sold in here fund pearls bought out later.

One buyer. A Cleric at journeyman takes rabbit feet at 2 per emerald, and that slot allows 12 sales before it needs a restock. No other profession lists it in either direction.

The best rate any villager offers is an emerald per 2 rabbit feet, from the Cleric, and nothing else on the list pays out faster. No villager sells rabbit foot back, so it is emeralds out and nothing in.

One slot at the Cleric takes 2 rabbit feet a trade, 12 trades, 12 emeralds. 8 of the 72 villagers that pay emeralds, emptied out:

12 acacia boats against 312 potatoes for the same 12 emeralds, 26 times the carrying, and the shortest wait is the Butcher at 7.5 real minutes of shelf, gathering not counted. Rabbit Foot itself pays 2 an emerald, so 10 of the 72 ask less and 60 ask more.

This offer sits at journeyman, level 3 of five, one of the earlier rungs a Cleric climbs, well below the tier where the same villager starts selling pearls back out. Reaching this trade is the easy half of the climb.

The slot itself runs 12 sales before it locks, and a Cleric only refills it by walking back to his brewing stand, up to twice a Minecraft day. Selling a full stockpile means working around that schedule.

12 sales close the slot, and the wait for a fresh batch runs 2 real minutes, the standard clock behind every trade. A Minecraft day spans 20 real minutes and fits two of those restocks.

Camped there for a full day, that Cleric clears 48 rabbit feet for 24 emeralds, whether or not each sale is watched as it happens.

One villager, one restock: the Cleric pays an emerald per 2 rabbit feet and that slot runs 12 trades before it needs refilling. Sell here first if the same villager is also being levelled up for its pearl trade.

Where they go back: that Cleric also sells redstone dust, 2 for 1 emerald, its cheapest offer.

Also on the Cleric's list: glowstone, scute, glass bottle, ender pearl, nether wart, bottle o' enchanting.

A rabbit foot is the base for Potion of Leaping, and nothing else in the game substitutes for it. The drop is not guaranteed either: most rabbits leave hide and meat and nothing else, so a Cleric who buys them is often better value than hunting for a specific number of feet.

Looting on the sword raises the chance, which is the only real way to influence it. Rabbits spawn in deserts, snowy places and meadows rather than in ordinary grassland, so the hunt usually means travelling to the right biome rather than clearing the field behind the village.

A potion of leaping raises how high you jump, which sounds like a novelty until you notice it also removes the fall damage for the extra height you gained. Extended with redstone it lasts long enough to cross terrain that would otherwise need stairs.

Corrupted with a fermented spider eye it becomes slowness, and that is the only route to slowness in the game, which is worth knowing if you are the sort who throws potions at things rather than drinking them.

Rabbits themselves are the awkward part. They are fast, fragile, and the foot is a rare drop even when you catch one, so anybody brewing seriously buys these rather than hunts them.