1. Rice cake soup is made from sliced long rice cakes.
2. Rice cake soup is made of sliced long rice cakes.
3. Rice cake soup is made with sliced long rice cakes.
(Which one is grammatical? Please notice the use of prepositions.)
2. Rice cake soup is made of sliced long rice cakes.
3. Rice cake soup is made with sliced long rice cakes.
(Which one is grammatical? Please notice the use of prepositions.)