

Believe it or not, you can make fried rice with fresh rice. It’s not exactly the same experience, but it’s equally tasty imo. If you haven’t tried it yet, give it a go. You might find that you like it too.
I doubt there would be enough of a market for precooked rice to make it worth selling. In households that do a lot of fried rice, this dish is usually more of a use-up-our-leftovers kind of meal than the sort of thing you go out of your way to make. The typical meal consists of white rice and sides of protein and vegetables. You make extra rice to make sure everyone has enough to eat in that meal, and whatever’s left over goes in the fridge. You collect 2-3 days of rice this way and when you have enough, it becomes fried rice.
1s * (126g/s) * (4.184J/(gC)) * (37C - T) = 524J/C * (37C - T)
120Wh = 432000J
T = -787C
So I guess the math checks out if your city’s water supply temperature is way below absolute zero.
Scratch that, let’s assume the water actually flows, so T=0C. What water throughout do we need to achieve this level of power consumption?
1s * (X g/s) * (4.184J/(gC)) * (37C) = 432000J
X = 2791g/s = 44gpm
You would have to be showering with 17 showerheads simultaneously using showerheads that are rated at the highest legal flow rates in the US (2.5gpm).