ㅆ
쌍시옷 (ssangsiot)
A sharp, hissing s, tenser than ㅅ.
StrokesFour strokes: two ㅅs side by side.
Easy to confuseㅅ — 살 means flesh; 쌀 means rice. Learners often hear them as the same.
Examples
쌀
ssal
uncooked rice
싸다
ssada
cheap
비싸다
bissada
expensive
Korean life dictionary
22 short guides to words and manners