According to the Arcane Technique "Satiety Food," Shard had to choose a consumable substance to start eating that night, and he needed to complete four meals before midnight.
The range of food options was wide, but it had to meet the basic condition of being able to satiate hunger with normal consumption. That meant things like the northwest wind wouldn't work since one couldn't possibly eat enough air to feel full. However, theoretically, if it were a handful of dust, as long as Shard dared to eat it, it would meet the goal of the arcane technique.
But Shard wanted to choose something "user-friendly" and readily available, so he eventually chose water. Among the three simple spells he mastered, there was one to conjure water directly.
"I hope I don't die of stomach distension," he said.
So, he began boiling water over and over in the kettle, frequently shooing away a cat squatting by the sink that wanted to drink from the faucet, worried about his bodily issues.
