By xp bottle you mean bottle o'enchanting. They cannot be made, but can be aquired by trading with a priest villager or spawning one in by creative mode or cheats.
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I do not know why you would want to clear your XP, but if you do, kill yourself In-Game.
i think its called bottle of enchanting, or bottle of enchantment.
Try searching on Youtube: How to make Brewing Stand, Glass Bottle and there are some more items like Blaze Powder, Glistering Melon...
/ xp /kill /me / gamemode 1 those are the useful ones
I didn't make Minecraft.