Cook rice. While rice is warm, add Kewpie mayonnaise and mix to coat thoroughly.
Slice two cloves garlic into thin chips. Finely mince the other two.
In a cold wok, add oil. To cold oil, add garlic chips. Cook over low heat to infuse oil with garlic flavour. When edges of garlic chips start to brown, remove from heat.
In the same oil, add minced garlic and butter. Toss 10-15 seconds, then add cooked rice. Toss to mix.
Add soy sauce and mix.
Push rice to a side and add egg. Scramble egg.
Push rice over half-cooked egg and stir quickly to break up egg.
This step is key - spread your rice out over the wok. Yes, as flat as you can. Then after half a minute or so, use your spatula to flip the rice grains (as much as you can) and toast the OTHER side. This will toast the rice grains and give it that char and wok hei.
Add spring onions and toss to mix. Serve hot.