Create/src/main/java/com/simibubi/create/AllFluids.java

package com.simibubi.create;

import javax.annotation.Nullable;

import com.simibubi.create.content.contraptions.fluids.VirtualFluid;
import com.simibubi.create.content.contraptions.fluids.potion.PotionFluid;
import com.simibubi.create.content.contraptions.fluids.potion.PotionFluid.PotionFluidAttributes;
import com.simibubi.create.content.palettes.AllPaletteBlocks;
import com.simibubi.create.foundation.data.CreateRegistrate;
import com.tterrag.registrate.util.entry.RegistryEntry;

import net.minecraft.block.BlockState;
import net.minecraft.block.Blocks;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.client.renderer.RenderTypeLookup;
import net.minecraft.fluid.Fluid;
import net.minecraft.fluid.IFluidState;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;
import net.minecraftforge.fluids.ForgeFlowingFluid;

public class AllFluids {

	private static final CreateRegistrate REGISTRATE = Create.registrate();

	public static RegistryEntry<PotionFluid> POTION =
		REGISTRATE.virtualFluid("potion", PotionFluidAttributes::new, PotionFluid::new)
			.lang(f -> "fluid.create.potion", "Potion")
			.register();

	public static RegistryEntry<VirtualFluid> TEA = REGISTRATE.virtualFluid("tea")
		.lang(f -> "fluid.create.tea", "Builder's Tea")
		.register();

	public static RegistryEntry<VirtualFluid> MILK = REGISTRATE.virtualFluid("milk")
		.lang(f -> "fluid.create.milk", "Milk")
		.tag(AllTags.forgeFluidTag("milk"))
		.register();

	public static RegistryEntry<ForgeFlowingFluid.Flowing> HONEY =
		REGISTRATE.fluid("honey", new ResourceLocation("block/honey_block_top"), Create.asResource("fluid/honey_flow"))
			.lang(f -> "fluid.create.honey", "Honey")
			.attributes(b -> b.viscosity(500)
				.density(1400))
			.properties(p -> p.levelDecreasePerBlock(2)
				.tickRate(25)
				.slopeFindDistance(3)
				.explosionResistance(100f))
			.tag(AllTags.forgeFluidTag("honey"))
			.register();

	public static RegistryEntry<ForgeFlowingFluid.Flowing> CHOCOLATE = REGISTRATE.standardFluid("chocolate")
		.lang(f -> "fluid.create.chocolate", "Chocolate")
		.attributes(b -> b.viscosity(500)
			.density(1400))
		.properties(p -> p.levelDecreasePerBlock(2)
			.tickRate(25)
			.slopeFindDistance(3)
			.explosionResistance(100f))
		.register();

	// Load this class

	public static void register() {}

	@OnlyIn(Dist.CLIENT)
	public static void assignRenderLayers() {
		makeTranslucent(HONEY);
	}

	@OnlyIn(Dist.CLIENT)
	private static void makeTranslucent(RegistryEntry<? extends ForgeFlowingFluid> entry) {
		ForgeFlowingFluid fluid = entry.get();
		RenderTypeLookup.setRenderLayer(fluid, RenderType.getTranslucent());
		RenderTypeLookup.setRenderLayer(fluid.getStillFluid(), RenderType.getTranslucent());
	}

	@Nullable
	public static BlockState getLavaInteraction(IFluidState fluidState) {
		Fluid fluid = fluidState.getFluid();
		if (fluid.isEquivalentTo(HONEY.get()))
			return fluidState.isSource() ? AllPaletteBlocks.LIMESTONE.getDefaultState()
				: AllPaletteBlocks.LIMESTONE_VARIANTS.registeredBlocks.get(0)
					.getDefaultState();
		if (fluid.isEquivalentTo(CHOCOLATE.get()))
			return fluidState.isSource() ? AllPaletteBlocks.SCORIA.getDefaultState()
				: AllPaletteBlocks.SCORIA_VARIANTS.registeredBlocks.get(0)
					.getDefaultState();
		return null;
	}

}