කොස් ගස හෙවත් බත් ගස. හරිම වටිනා ආහාර ගබඩාවක් තමයි කොස් ගස කියන්නේ. The jackfruit tree, also known as "the rice tree in Sri Lanka", is a common sight in Sri Lanka. It is recognized for its large, tropical fruit called "kos" in Sinhala. The tree is an evergreen plant that is strong and sturdy, and it thrives in the warm, humid climate of the island. Jackfruit is a staple in Sri Lankan cuisine, and it is enjoyed ripe or unripe in various dishes. Additionally, the tree provides shade, and its wood is utilized in carpentry. It is deeply ingrained in Sri Lankan culture and often symbolizes abundance and prosperity.