Not Enough Recipe Book

Not Enough Recipe Book (NERB) is an optimization mod that strips out the vanilla recipe book: it stops the book being saved to and loaded from player data, stops the server sending recipe-unlock packets, and makes awardRecipes a no-op. On a busy server that removes a meaningful amount of per-player save data and network traffic.

Apoli registers no types for NERB. This compat is behaviour-gated: everything below happens automatically when NERB is installed, and nothing changes when it is not.

What Apoli does when NERB is installed#

Area	Behaviour
apoli:recipe	Power-gated recipes stay craftable even with the doLimitedCrafting gamerule on.
apoli:modify_crafting	Follows apoli:recipe, so crafting modifications still apply to those recipes.
apoli:nbt	Skips Apoli’s own recipe-book work when snapshotting entity NBT.

Why apoli:recipe needs this#

With doLimitedCrafting on, vanilla refuses to assemble a recipe the player has not unlocked in their recipe book. NERB never unlocks anything, so on a server running both, every recipe would become uncraftable — including the ones your apoli:recipe powers add.

That gate is redundant for Apoli’s recipes anyway: the power is the gate. A player who holds the power may craft the recipe; a player who does not never sees a result in the output slot. So when NERB is present, Apoli lets its own power-gated recipes through the limited-crafting check. Vanilla and other mods’ recipes are untouched — Apoli does not re-enable them, because that is NERB’s decision to make.

Without NERB, nothing is bypassed and doLimitedCrafting behaves exactly as vanilla does.

Why apoli:nbt gets faster#

An apoli:nbt entity condition has to serialize the entity to compare against the tag you wrote, and for a player the recipe book is by far the largest part of that. Apoli normally works around this by suppressing recipe-book serialization and caching the snapshot for the rest of the tick, except when your condition explicitly mentions recipeBook.

Under NERB the recipe book always serializes as empty, so that special case is pointless: Apoli drops the suppression bookkeeping and lets conditions that mention recipeBook use the cached snapshot like every other condition. A condition matching on recipeBook contents will therefore never match anything on a NERB server — there is nothing in the book to match.

Recipe book UI#

NERB’s own config (buttonMode) decides what happens to the recipe book button — removed, inert, or repurposed to toggle JEI/REI/EMI. Apoli does not interact with that setting. If you set NERB to DISCOVERED mode (which unlocks every recipe and applies no optimizations), the limited-crafting bypass above is never needed and never kicks in, because vanilla’s own check already passes.