Steps

1. In a bowl, add 25g mayonnaise, 5g ketchup, 4 shakes Aji-no-moto (MSG), 1 pinch salt, 1 pinch sugar, 1 tsp grain mustard, and black pepper to taste. Mix well. 【Tip!】 Mix thoroughly to ensure the salt and sugar dissolve completely.
   🕒 03:12
2. Spread half of the prepared sauce evenly onto each of the 2 slices of 6-slice bread. 【Tip!】 Apply the sauce first, as the oil in the mayonnaise prevents the bread from absorbing moisture.
   🕒 05:00
3. Place the 4 strips of bacon in a frying pan without oil and cook over medium heat. 【Tip!】 No additional oil is needed as the bacon will render its own fat. Cook until lightly browned, not overly crispy, to retain its juiciness.
   🕒 08:09
4. Once cooked, remove the bacon from the pan, turn off the heat, and arrange it on one of the bread slices with sauce.
   🕒 08:47
5. Keep the bacon fat in the frying pan, heat over low-medium heat, and crack in the 2 eggs. Use a spatula to gently center the yolks, then cover and steam-fry. 【Tip!】 Steam-frying slowly over low heat creates moist and plump fried eggs. Do not overcook; aim for a soft-set yolk to prevent it from running out.
   🕒 09:59
6. Once the fried eggs are cooked, place them on top of the bacon arranged on the bread.
   🕒 11:01
7. Place the 2 slices of Cheddar cheese on top of the fried eggs, then cover with the other slice of bread to make a sandwich.
   🕒 11:13
8. Heat the frying pan over medium heat and melt 10g butter. Place the hot sandwich in the pan and cook over low-medium heat until golden brown, ensuring the bread absorbs the butter. 【Tip!】 Move the sandwich around the pan to make sure the entire bread absorbs the butter, pressing gently while cooking. Be careful not to press too hard.
   🕒 11:13
9. Once one side is golden brown, flip the sandwich, add a little more butter, and continue cooking over low-medium heat until the other side is also golden brown, ensuring the bread absorbs the butter. 【Tip!】 Cook over low-medium heat to prevent burning, and press gently to achieve the classic hot sandwich appearance.
   🕒 12:25
10. Once both sides are golden brown, remove from the pan and cut in half. Sprinkle Ajishio (seasoned salt) to taste on the surface, if desired. 【Tip!】 The fried egg portion tends to be lightly seasoned, so sprinkling Ajishio balances the overall flavor.
    🕒 13:42