Still need 5 recipes but if it can help here's how I get 5 stars reviews from the last story characters (not sure about the dishes names in english sorry) :
- Maurice : manly curry (his story dish), spicy
- Ginji : bouillabaisse, bitter
- Miere : fruit pie (it's in the "bread" section), cold
- Chouchou & Lanche : mont blanc (secret recipe from Rosetta), sweet
- Dr Zeff : energy soup (his story dish), bitter
Other recipe could also work, that's just the ones I use to get 5 stars reviews. Not sure if the ingredient quality impacts the review, but I try using the best ingredients I can to make the dishes " +2 " or " +3 " quality. If you run out of ingredients just use different ones the important thing is the overall taste (sweet, salty, etc) of the dish, it has to fit what the character like.
Also it's important to note that if your cook starts dancing with a sad face emoji, he WILL fail the dish he's currently preparing, even if you talk to him immediately, resulting in "it was better last time" 2 stars reviews. To prevent that, I found that giving the order right after Ipanema does it works pretty well, as Luccola is less likely to get in a bad mood between two successive orders. Basically you take the story character's order, you wait for Ipanema to put in her current order and then you do the same. Then check on Luccola: if he starts preparing the food normally, leave him be, but if he starts smiling and dancing go talk to him immediately. The first order will be ruined, but that won't matter because that's Ipanema's order and not the one for the story character.
Hope that helps because the grind for the last recipes is such a pain...