a joke that went too far, and got created into a mod.
This mod allows you to not just eat cobblestone, but also most other vanilla rocks as well!
As of version 1.0.1, you can eat the following rocks: Stone, Cobblestone, Deepslate, Cobbled Deepslate, Diorite, Andesite, Granite and Netherrack
There are also some additional items you can make that cause different things when eaten. An example is a bowl of Sodium Sulfate, crafted using sodium and gunpowder. When eaten, it causes some, "explosive", effects
There are three levels of this item (regular, strong and extra strong) that cause stronger explosions, along with launching you higher, as the tier goes up.
Other items of this nature include the bowl of lava, which when eaten, ignites the player instantly.
Also added in are 2 types of stone-based cereal, being CobblOs and ObsidOs. The former being made with cobblestone, the latter being made with obsidian. You can combine these cereals in a bowl with either Milk, Lava, or the new Nuclear Waste item to produce bowls of cereal that give different amounts of hunger and potion effects. If you want the safest option, going with Milk is the best bet.
Every item eaten as of release 1.0.1:
<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/4_brZEo_L8E" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>Note: I have tested this with Sinytra Connector on forge (as of 1.20.1 release), seems to work fine with it
the player eats a block of netherrack, then gets the slowness potion effect and the fire resistance potion effect
The player eats a bowl of lava. said player then ignites
Every item in the mod as of release 1.0.1
The player eats a bowl of sodium sulfate. it then explodes, sending the player into the air. a few seconds later, they get poisoned and fall to their death
The player eats a block of cobblestone that they are holding in their hand