I found these sayings in the film "Between Two Ferns The Movie 2019"
Waiter: Can I get you some honey gushers to start?
The customer: What are honey gushers?
Waiter: It's just lemonade.
it seems like "lemonade" here is an adjective. I also heard a lot of Australian people use "lemonade" as an adjective.
But in the dictionary, lemonade is a noun
lem‧on‧ade /ˌleməˈneɪd◂/ ●●○ noun [countable, uncountable]
1 British English a sweet fizzy drink that tastes of lemons
a glass of lemonade
Would you like a lemonade?
2 a drink made from lemons, sugar, and water
But we have the adjective "lemony"
lem‧on‧y /ˈleməni/ adjective
smelling or tasting of lemons
a lovely lemony flavour
But it seems like not many people use the adjective "lemony". Most would say "it is lemonade"
can "lemonade" be an adjective?