The Potion of Haste is a theoretical item in Minecraft that would grant the haste effect if it existed. Haste is a status effect in Minecraft that allows you to mine faster, so this would be a useful potion. If one of these ever becomes available in the game, a recipe is below.

In Minecraft, Haste is a status effect that makes all actions 20 percent faster. It's most useful for mining, but it also makes you dig, hoe, chop, and attack 20 percent faster. It's similar to the efficiency enchantment, as a pickaxe with that enchantment can mine blocks faster. The difference is that the efficiency enchantment only affects the one tool it's equipped on, while Haste affects everything you do while you have the status effect.

While a potion to grant the Haste effect would be useful, the reality is that there is no Brewing Stand recipe to make a Potion of Haste in Minecraft. Therefore, to take advantage of the Haste effect in Minecraft, there are only two ways to gain this status effect. You enter Beacon Range with the Haste effect active, or as part of the Conduit Power status effect that you gain whenever there is an active conduit nearby.

Beacons grant status effects up to 20 blocks away at level one, and up to 50 blocks away at level four. You also retain the status effect for 11-16 seconds after you leave range, based on the beacon's level. You can level up beacons by placing them on increasingly larger pyramids made of mineral blocks.