How food likings are determined

When you feed a Mii a food, its reaction isn’t a fixed property of the food. The same dish can be a treat for one Mii and merely “normal” for another. The reaction is built from four parameters:

1. The food’s flavor profile, a fixed rating the food carries for each of four palate types.
2. The Mii’s hidden taste type (TasteType), which of those four columns applies to this Mii.
3. The Mii’s personal favourites and hated foods, four per-Mii overrides that force the extreme reactions.
4. A small per-Mii jitter, a wobble so two Miis of the same palate type don’t react identically.

The result is a single reaction value from 0 to 19, which the game then buckets into reactions from “All-time worst” up to “All-time favourite”.

The short version

If you don’t care about the numbers:

• Every food has a built-in rating, but it isn’t one rating, it’s four, one for each kind of taste profiles.
• Each Mii secretly falls in one of those four categories, so they read off that food’s rating from their own column. That’s why one Mii can love a dish another hates.
• On top of that, every Mii has a tiny built-in variation that changes the rating of each food a little up or down, so even two Miis in the same category won’t have exactly the same results.
• Finally, each Mii has up to two all-time favourites and two most-hated foods. Those always get the strongest reaction no matter what, ignoring everything above.

The food’s flavor profile

Every food in the game’s FoodParam table carries four taste columns: TasteA, TasteB, TasteC, TasteD. Each column holds one of sixteen flavor grades, organised into five outcomes. Internally each grade is a hashed name like Normal00, mapped to the value, they line up like this:

Band	Grades	Value
Very bad	VeryBad00-VeryBad02	0-2
Bad	Bad00-Bad02	3-5
Normal	Normal00-Normal03	6-9
Good	Good00-Good02	10-12
Very good	VeryGood00-VeryGood02	13-15

Some examples straight from FoodParam:

• Apple pie is [13, 14, 12, 10], “very good” to palates A and B, “good” to C and D. Nearly everyone likes it.
• Avocado is [7, 5, 5, 12], Normal01 / Bad02 / Bad02 / Good02.

The columns have no in-game names, they’re just A, B, C, D. The same FoodParam row also carries descriptive flavor tags (TasteSweet, TasteSour, TasteSpicy, TasteSalty, TasteOily, TasteAwful), a Smell, a Temperature, and food-group flags (fruit, meat, drink, …), but the like/dislike reaction is computed only from the four Taste* columns.

The Mii’s taste type

Each Mii stores a hidden taste type in Mii.MiiMisc.EatInfo.TasteType, a value of 0, 1, 2, or 3 that picks which of the food’s four columns applies to that Mii. Type 0 reads TasteA, type 1 reads TasteB, and so on. (Anything outside 0-3 falls back to column 0.)

This is why feeding the same dish to two Miis can give different results.

The per-Mii jitter

To stop every Mii of the same palate type from reacting identically, the game adds a small wobble derived from each Mii and the specific food:

seed   = (CharInfoEx[2] << 8) | CharInfoEx[3]      // part of the UUID of the Mii
jitter = ((seed + foodHash) % 7) - 3               // an integer in the range -3 … +3

The seed is two bytes lifted from the Mii’s CharInfoEx, so it never changes for a given Mii. Combined with the food’s hash it produces a fixed result between -3 and +3 for each Mii/food pair.

Putting it together

The reaction value is:

value = ordinal + 2 + jitter        (then clamped to the range 2 … 17)

The + 2 shifts the bands so they map cleanly onto the visible tiers. With no jitter, a food’s flavor band lands exactly on the matching tier - a “good” food (ordinal 10-12) produces value 12-14, which displays as Good. The jitter then nudges the result up or down by up to three, so a borderline food can tip into the neighbouring tier for some Miis.

Because the value is clamped to 2-17, ordinary foods can only ever range from “Very bad” to “Very good”. The four extreme tiers are reserved for the per-Mii overrides below.

Personal favourites and hated foods

EatInfo stores four per-Mii food IDs that short-circuit the whole calculation. If the food being fed matches one of these, its reaction value is forced and the taste profile is ignored entirely:

Field	Forced value	Tier
UltraBestId	19	All-time favourite
BestId	18	Favourite
WorstId	1	Hated
UltraWorstId	0	All-time worst

These are the only way to reach values 0, 1, 18, and 19, other foods can never reach them.

From value to tier

The final 0-19 value is bucketed into one of nine tiers:

Reaction value	Tier
0	All-time worst (override only)
1	Hated (override only)
2-4	Very bad
5-7	Bad
8-11	Normal
12-14	Good
15-17	Very good
18	Favourite (override only)
19	All-time favourite (override only)

Flowchart

Where this lives in the save

• Mii.MiiMisc.EatInfo.TasteType, the hidden palate type (0-3).
• Mii.MiiMisc.EatInfo UltraBestId / BestId / WorstId / UltraWorstId, the per-Mii overrides.
• Mii.CharInfoEx, the source of the per-Mii jitter seed.