What would everyone's favorite flavor of milkshake be? [Also no "ketchup-flavor" one for Sans, that's cheating ;) ]. As an aside, I think Gaster's would be cookies&creme, or coffee.
Sans: Hot dog. Heyyy, I did what you asked! Itâs not ketchup! ;) Sorry. Sans is a canonical troll. Youâre going to get a troll answer here, too.
Alright alright alright FINE. If you want something slightly non-trollish⌠then coffee. With Sansâ tendency to fall asleep anywhere and everywhere, I imagine heâs someone who requires caffeine boosts to be halfway functional. Heâll have developed quite the taste in coffee.
Toriel: Snail. Okay okay okay come on. You KNOW itâs snail. Itâs so snail flavored milkshake. If she loves the taste of snails so much that she even bakes snail pie, thereâs no way Iâm doubting sheâd drink a snail milkshake, too.
Papyrus: Strawberry. When I first played Undertale, I imagined Papyrusâ first milkshake at Grillbyâs being chocolate, for whatever reason (I think thatâs because itâs my prototype milkshake flavor). But maybe it was strawberry? For sure, I feel like Papyrus would enjoy the taste of a milkshake that comes from something perceived âhealthier.â Heâs not someone who enjoys greasy or unhealthy food. Strawberries are going to give you a lot of sugar, but theyâve got a bit of a âhealthier vibeâ than, say, caramel or coffee!
Undyne: None. She doesnât like milkshakes. Undyne doesnât like cold food - she even has a specially constructed refrigerator to keep things warm (why was she âcookingâ a popsicle, then? maybe itâs an exception?). Undyne also explicitly states she doesnât like ice cream multiple times. For instance, in the phone call from room_fire_hotelfront_1, she says:
Oh yeah, that reminds me.I told RG01 and RG02 that if they managed to nab you...I'd take them both out for ice cream.I hope you were able to avoid them.Cause I HATE ice cream!!
Then, when you call Undyne in room_water_nicecream, she says:
Ugh, ice cream!? Sugary... COLD... Talk about GROSS.Now this chilly pink stuff that Alphys makes me...THAT rules!!!Â
 I'll also drink it if it's heated up.
Iâm not sure what the âchilly pink stuffâ is, and I havenât seen any convincing explanations on what it is from other speculators. We do know that Alphys makes ice cream with seaweed, as she explains on her date, but itâs up in the air about whether or not Undyne would eat it. On one side, Undyne obviously dislikes ice cream. On the other side, Undyne might eat something she normally wouldnât because she has a crush on Alphys. In that case, if Undyne ends up liking it, she might not call it âice creamâ out of stubbornness. If somehow Alphysâ âchilly pink stuffâ is strawberry ice cream, then maybe Undyne (getting over her stubbornness) could like a strawberry milkshake.
Now if Undyne were someone who liked cold food and had the potential to like a milkshake, I would have normally picked chocolate, being as we know Undyne likes to drink hot chocolate. But since she so adamantly talks about hating ice cream, and milkshakes are made from ice cream, she probably doesnât like milkshakes.
Alphys: Caramel. Alphys canonically eats a lot of junk food, what between the soda and the instant noodles. Soda tends to give people a bit of a sweet tooth, and I feel that would be the case with Alphys. So for a milkshake, I imagine that Alphys would want something deliciously unhealthy and sugary sweet. You canât get much sweeter than caramel. I also imagine her liking banana, though, for whatever reason.
Not to give too many flavors... but since she also makes âchilly pink stuff,â we could again say strawberry is something she likes. Or raspberry. I guess sometimes pink flavor is raspberry.
Asgore: Cookies and cream. I feel like heâd enjoy lots of milkshake flavors, though. Heâs not picky. He finds them tasty.
Frisk: Cinnamon or butterscotch? XD Hehehehe. Sorry. Couldnât resist. Itâs probably something like caramel!
Chara: Chocolate. Does it even need to be said?
Gaster: Depends what sort of Gaster weâre talking about. Is this Gaster in general as depicted in canon and/or the widespread creativity of fandom? Or is this like, my fic Gaster? Being as I know you know âmy Gasterâ, I guess Iâll answer for him? Youâre right. He would like cookies and cream. Heâs also a really big vanilla guy. Thatâs usually what he orders. After he orders everyone elseâs milkshakes. Without asking them what they want. Because he already knows what they like. And heâs going to do it and no one is going to stop him.
I guess youâve also seen me badly draw Gaster with a chocolate milkshake.
River Person: Cookies and cream. Yes Iâm including River Person. Something nice, sweet, and and almost âchild-likeâ. They hum and sip on the milkshake at the same time.














