combine magma cream and the awkward potion
There is no official way to make ice cream in Minecraft. There may be a user made mod that would allow you to make ice cream. Currently ice cream is not planned to be added to Minecraft.
Magma Cubes, along with Slimes, are unique in Minecraft as when they die, they drop four smaller versions of themselves, and when they themselves die, they also drop four smaller versions of themselves. As well as this, Magma Cubes usually (not always) drop magma cream and experience orbs.
Magma Cubes are found in the Nether, mostly around Nether Fortresses.
There are many potions you can make but you need many different materials to do so first you need to make awkward potions and then you add the fizz like fermented spider eyes magma cream and you can make potions of fire resistance potions of speed potions of regeneration potions of instant health which instantly heal you also instant damage and much more check the wiki by typing minecraft wiki in on google it's a very useful site that's about what you can make
Obsidian is found in really deep creeper caves with magma and water. Magma + Water = Obsidian You need a 3x5 rectangle of obsidian and light it with flint and stone.
you need a diamond pick and to mix water and magma
Blaze Powder isn't 'used' as an inventory item, but it is used in brewing and crafting, for example, Blaze Powder + Slime Ball = Magma Cream. Blaze Powder + Ender Pearl = Eye of Ender.
They have no purpose apart from throwing them (like snowballs). An update may come out where they become useful. UPDATE: You can make Sticky Pistons, which can grab a block 2 blocks away from being placed and bring it back.
Look at the Mineraft Wiki for more brewing info. First add a Nether Wart. Second add the effect. Sugar=Speed Glistening Melon= Health Magma Cream= Fire Resistence There are many more. There is much more info so please check out the Minecraft Wiki's page on this.
A volcano does not make magma. The magma is created underground by melted rocks due to the earth's core temperature. When na big amount of magma is created, the volcano feels pressure, and then it errupts magma, but it does not make it.
There is no such thing as magma larva