hard

This snack is hard.

この菓子は硬いです

This snack is very hard.

この菓子はとても硬いです

This snack is so hard it's difficult to break by hand.

この菓子は手で折るのが難しいほどとても硬いです

This snack that was left out is so hard it's difficult to break by hand.

おいたこの菓子は手で折るのが難しいほどとても硬いです

This snack left out with the bag open is so hard it's difficult to break by hand.

袋を開けておいたこの菓子は、手で折るのが難しいほどとても硬いです