An indication of freshness is often represented by the word 'SLAP, ' which is an acronym for 'Sight, Look, Aroma, and Feel/Texture.' This term is used to describe the four senses that can be used to determine the freshness of a product. Sight refers to the appearance of the product, look refers to the texture, aroma refers to the smell, and feel/texture refers to the tactile sensation of the product. Together, these four senses can be used to determine the freshness of a product.