Some Christians treat Ash Wednesday as a day for remembering one's mortality. Masses are traditionally held on this day, and attendees who receive communion on this day are blessed with ashes by the priest ministering the ceremony. The minister marks the forehead of each celebrant with black ashes, leaving a mark that the worshipper traditionally leaves on his or her forehead until sundown, before washing it off.
Being the first day of Lent, it comes the day after Shrove Tuesday. In certain parts of the UK, Ash Wednesday similarly involves the ritual consumption of a food stuff; in this case the homonymous dish hash.