by the rapid cooling
of magnesium and iron-rich LAVA?
The Big Bang Theory Season 12, Episode 2
Well, I hope you saved room
for chocolate LAVA cake.
The Big Bang Theory Season 5, Episode 20
Lava Serpent.
The Big Bang Theory Season 3, Episode 5
...how to make papier-mâché volcanoes
with baking-soda LAVA.
The Big Bang Theory Season 2, Episode 6
Really? The chocolate LAVA cake,
The Big Bang Theory Season 5, Episode 20