All of the ingredients have one or more effects. These effects have certain magnitudes, from 0-1. Lets say ingredient A has 0.5 Healing and 0.4 Strength

In order to register the healing effect of the potion, you need to toss in ingredient A twice, because when summed up it adds to 1 (0.5 + 0.5). The potion however won’t have the strength effect, because that would be only 0.8 (0.4 + 0.4) - you would need to throw in the ingredient three times.

You can combine many ingredients, and it is vital to use sampling kits and to take notes, on a lectern or in a book, to truly uncover the power of combining ingredients for very powerful potions.

Redstone still makes potion last longer, and gunpowder makes potions throwable.

List of all possible ingredients: Allium, Azure, Beetroot, Blaze powder, Blaze rod, Blue orchid, Bone, Brown mushroom, Cobweb, Cornflower, Crimson mushroom, Dandelion, Dried kelp, Eye of ender, Feather, Fermented spider eye, Ghast tear, Glistening melon slice, Glowstone dust, Golden carrot, Honey, Ink sac, Kelp, Lily of the valley, Lily pad, Magma cream, Nether wart, Oxeye daisy, Phantom membrane, Poisonous potato, Poppy, Rabbit foot, Red mushroom, Sea pickle, Slimeball, Spider eye, Sugar, Sweet berries, Tulip, Warped fungus, Wither rose

 mobeffect:majruszsdifficulty:bleeding_immunity
 mobeffect:majruszsdifficulty:bleeding
 mobeffect:majruszsdifficulty:glass_regeneration
 
 mobeffect:supplementaries:overencumbered - ???
 
 mobeffect:farmersdelight:nourishment - prevents losing saturation/hunger during exhaustive actions running/jumping/fighting; Negates hunger
 mobeffect:farmersdelight:comfort - natural regen despite hunger
 
 mobeffect:quark:resilience - knockback resist, do not use if possible
 
 mobeffect:savage_and_ravage:weight - slows movement speed and prevents jumping
 
 mobeffect:alexsmobs:knockback_resistance
 mobeffect:alexsmobs:bug_pheromones - no arthropod attack
 mobeffect:alexsmobs:clinging - walk on blocks upside down
 mobeffect:alexsmobs:lava_vision - see in lava
 mobeffect:alexsmobs:oiled - float on water levitate in rain
 mobeffect:alexsmobs:orcas_might - lower attack speed
 mobeffect:alexsmobs:soulsteal - damaging enemy absorbs health
 mobeffect:alexsmobs:fleet_footed - faster movement during jumping
 mobeffect:alexsmobs:sunbird_curse - massively increased falling speed
 mobeffect:alexsmobs:sunbird_blessing - longer fly duration with elytra
 mobeffect:alexsmobs:earthquake - shakes screen
 
 mobeffect:alexsmobs:tigers_blessing - do not use
 mobeffect:alexsmobs:ender_flu - do not use
 mobeffect:alexsmobs:exsanguination - do not use
 mobeffect:alexsmobs:power_down - joke setting
 mobeffect:alexsmobs:fear - stops player from moving
 mobeffect:alexsmobs:debilitating_sting - do not use 
 mobeffect:alexsmobs:poison_resistance - stops all poison, do not use
 
 mobeffect:minecraft:nausea
 mobeffect:minecraft:weakness
 mobeffect:minecraft:blindness
 mobeffect:minecraft:luck
 mobeffect:minecraft:wither
 mobeffect:minecraft:invisibility
 mobeffect:minecraft:resistance
 mobeffect:minecraft:hunger
 mobeffect:minecraft:water_breathing
 mobeffect:minecraft:speed
 mobeffect:minecraft:mining_fatigue
 mobeffect:minecraft:glowing
 mobeffect:minecraft:slow_falling
 mobeffect:minecraft:haste
 mobeffect:minecraft:saturation
 mobeffect:minecraft:slowness
 mobeffect:minecraft:bad_omen
 mobeffect:minecraft:fire_resistance
 mobeffect:minecraft:hero_of_the_village
 mobeffect:minecraft:night_vision
 mobeffect:minecraft:instant_damage
 mobeffect:minecraft:instant_health
 mobeffect:minecraft:levitation
 mobeffect:minecraft:health_boost
 mobeffect:minecraft:regeneration
 mobeffect:minecraft:conduit_power
 mobeffect:minecraft:dolphins_grace
 mobeffect:minecraft:strength
 mobeffect:minecraft:unluck
 mobeffect:minecraft:poison
 mobeffect:minecraft:jump_boost
 mobeffect:minecraft:absorption