Java Class Code :

 

package com.example.examplemod.items;

import net.minecraft.item.Item;
import net.minecraft.potion.EffectInstance;
import net.minecraft.potion.Effects;
import net.minecraft.item.Food;
import net.minecraft.item.ItemGroup;

public class Sliced_Cucumber extends Item {

    private static EffectInstance sliced_cucumberEffect = new EffectInstance(Effects.SPEED, 0, 0);

    private static Food sliced_cucumberFood = new Food.Builder().hunger(1).saturation(1.2f).effect(() -> sliced_cucumberEffect, 1f).setAlwaysEdible().build();

    private static Properties sliced_cucumberProperties = new Properties().group(ItemGroup.FOOD).food(sliced_cucumberFood);

    public Sliced_Cucumber() {
        super(sliced_cucumberProperties);
    }
}
 

 

what did you mean by remove Effects from Item, also no not create Objects in a static fields, create them directly in the constructor