Strength Potion

To make a Strength Potion (3:00), you first need to make an awkward potion

after the awkward potion is finished put blazepowder in the top slot and wait for the Strength potion to finish

For the strength II effect (1:30), put a piece of glowstone in the top slot and the strength potion (3:00) in the bottom slot

For a longer lasting effect (8:00), put a piece of redstone in the top slot and the strength potion in the bottom slot

If you want to make a splash Potion out of it you simply put a piece of gunpowder in the top slot

And if the splash potion is not enough for you and you want to make a lingering potion from it, then you just put a bottle of dragon´s breath in the top slot and the splash potion in the bottom slot