Some Bubbly NYT is mostly a reference to The New York Times crossword or mini crossword, where wordplay, themes, or pop culture references include such clues or phrases. It can't be considered a separate source by itself, but rather a clue or answer that is used in the YT's puzzle content.
The New York Times crossword clue “source for some bubbly” typically refers to yeast. Yeast produces carbon dioxide during fermentation, creating bubbles in champagne, beer, and bread dough, which makes it a common, concise crossword answer in many puzzles overall.
In the New York Times Crossword, the clue “Source for some bubbly” most commonly points to “yeast.” Yeast produces carbon dioxide during fermentation, creating bubbles in drinks like beer and champagne. In some puzzles, “spring” (as in spring water) may also fit, depending on the grid.