To start the combo chain, Special Summon Petingcessoeur or summon Magileine and search Petingcessoeur. Then Special Summon Puddingcess from Deck or Hand. Xyz Summon Glassoufle in Defense Position. Activate Glassoufle effect, sending Petingcessoeur to the GY and targeting anyone. Xyz Summon Puddingcess Chocolat-a-la-Mode using Glassoufle. Activate A-la-Mode effect to send Petingcessoeur back to the deck (if Chateau is on the field, don't put it in hand). A-la-Mode triggers and activate it detaching Glassoufle.
From here we have a few options. If Anjelly wasn't used to find Petingcessoeur yet, it can be used to find the follow up cards. Otherwise, choose Hootcake with A-la-Mode effect and onto the field. Banish Glassoufle for Hootcake's effect and Special Summon Messengelato. With Messengelato we can find the 3 main spell cards in the Madolche archetype:
- Salon: Any Madolche that returns from Field or GY to Hand or Deck allows to search a Madolche Spell/Trap and set it directly to the Field, therefore, it's another way to search the main Spell cards. It also allows a second Normal Summon if one is a Madolche monster, good to use level 4 monster from hand in case there aren't enough on the field to Xyz.
- Ticket: Any Madolche that returns from Field or GY to Hand or Deck allows to search a Madolche monster to the Hand. If a Fairy Madolche is on the Field, it Special Summons it. Anjelly, Petingcessoeur, Puddingcess, Glassoufle, Tiaramisu and A-la-Mode are all Fairies allowing to Special Summon Messengelato when a Beast type is on the field to find any Madolche Spell/Trap.
- Chateau: Besides from the obvious 500 ATK/DEF bonus to any Madolche monster, this spell allows to return any Madolches in GY to Deck, triggering effects like Ticket, Salon and A-la-Mode.
Usually, I go Chateau, Salon, Ticket. Bringing Chateau with Messengelato allows to return Anjelly in GY to Deck, triggering A-la-Mode again, detaching Puddingcess to find another Messengelato. With the second one find Salon if you plan on Xyz Summoning Tiaramisu to return things to the opponent's deck for this will trigger Salon and give you access to a Promenade as a protection. If you don't plan or don't have more ways to trigger Madolche's return ability, search Promenade as the protection it gives is imperative if you don't finish the game that turn.
As it can be understood, having some Madolches in the GY is good as it allows effects like Promenade, Tiaramisu, Lesson and A-la-Mode. One easy way to put monsters on the grave is Link Summoning Fresh Sistart, giving 2 bodies for the effects. Sistart is herself a way to trigger Salon, Ticket or A-la-Mode as it can prevent being destroyed by returning 1 Madolche monster to the Deck.
On other simplier synergies we have Mewfeuille that, when Normal Summoned, Special Summons Messengelato from Hand, searching the Madolche Spells/Traps. Cruffssant can return ANY Madolche card on the field to raise it's level to 4 and gain 300 ATK/DEF, being one of the 2 non-Extra Deck monsters with highest ATK possible (short of Lesson), however careful to not have Sistart pointing to any Madolche as it protects Madolche Spells/Traps even from your own effects (the amount of times I saw myself obligated to return a monster are too many). Lesson serves as a finisher in case you need that extra 800 ATK/DEF to go over your opponent's defenses or another way to return Madolches to the Deck.
Regarding non-Madolche cards, Impermanence is a handtrap for turn 1 effects, Called by the Grave stops other handtraps and Twin Twisters destroys Spells/Traps for the price of putting a Madolche in the GY from Hand. Card of Fate is a personal fan card that may or may not give you Petingcessoeur. Abyss Dweller is a GY hate card, Bagooska is a total lockdown for 2 turns, but I play it cause it looks cute, Phoenix is an easy Spell/Trap removal and Almiraj is protection against removal.