Strength is a player's attribute in Salt. It is shown under the food attribute when the inventory is opened. Strength increases the amount of damage you deal with melee weapons. It increases the weapon's damage by 1% per point of strength. The critical hits are also affected by the damage increase. You have extra strength (30) while in mid-air from a jump.
Example: The player wears equipment that increases strength and has drunk a Hightop Bloom Potion, which granted him a 10 Strength bonus. His total bonus of strength is 30, which means he will do 30% more damage with melee weapons. If the player equips a scimitar (16 base damage), the true damage value will be 21.