Question: What medium did Leonardo Da Vinci use to paint The Last Supper?
About the article "Leonardo da Vinci", section "Paintings of the 1490s".

Candidate passages:
His engravings include "The Flight into Egypt"; after a picture said to he by Correggio.
"The Last Supper"; after Leonardo da Vinci.
"M. Peregrina Amoretti"; after Boroni.
Twenty-three Views of Milan.  
The Last Supper (1480) is a fresco by the Italian Renaissance artist Domenico Ghirlandaio.
It depicts Jesus and the Apostles during the Last Supper, with Judas sitting separately on the near side of the table, as is common in depictions of the Last Supper in Christian art.
Ghirlandaio was already famous and was about to travel to Rome to paint the Sistine Chapel with other Florentine painters when he received the commission for this fresco.
During the restoration of the fresco later, a preliminary sketch of it was discovered on the left wall of the refectory in Cenacolo di Ognissanti.
It is likely that Leonardo da Vinci was already familiar with Ghirlandaio's treatment of the Last Supper, as well as that of Castagno, and painted his own Last Supper in a more dramatic form to contrast with the stillness of these works, so that more emotion would be displayed. 
Leonardo's most famous painting of the 1490s is "The Last Supper", painted for the refectory of the Convent of Santa Maria della Grazie in Milan.
The painting represents the last meal shared by Jesus with his disciples before his capture and death.
It shows specifically the moment when Jesus has just said "one of you will betray me".
Leonardo tells the story of the consternation that this statement caused to the twelve followers of Jesus.
The novelist Matteo Bandello observed Leonardo at work and wrote that some days he would paint from dawn till dusk without stopping to eat and then not paint for three or four days at a time.
This was beyond the comprehension of the prior of the convent, who hounded him until Leonardo asked Ludovico to intervene.
Vasari describes how Leonardo, troubled over his ability to adequately depict the faces of Christ and the traitor Judas, told the Duke that he might be obliged to use the prior as his model.
When finished, the painting was acclaimed as a masterpiece of design and characterisation, but it deteriorated rapidly, so that within a hundred years it was described by one viewer as "completely ruined".
Leonardo, instead of using the reliable technique of fresco, had used tempera over a ground that was mainly gesso, resulting in a surface which was subject to mold and to flaking.
Despite this, the painting has remained one of the most reproduced works of art, countless copies being made in every medium from carpets to cameos.
 "This page only lists article titles containing the phrase “Da Vinci”; for a more complete list of entities named after Leonardo da Vinci, see List of things named after Leonardo da Vinci."
Da Vinci usually refers to Leonardo da Vinci (1452–1519), Italian Renaissance polymath.
It may also refer to: 
Depictions of the Last Supper in Christian art:  "The Last Supper" (Leonardo da Vinci), the famous 1495–1498 painting by Leonardo da Vinci  "Last Supper" (del Castagno), a 1447 painting by Andrea del Castagno  "Last Supper", a 1464–1467 painting by Dirk Bouts  "Last Supper" (Ghirlandaio), a 1480 painting by Domenico Ghirlandaio  "Last Supper" (Tintoretto), a 1594 painting by Tintoretto  "The Last Supper", a 16th-century painting by Jacopo Bassano  "The Last Supper", a 1648 painting by Philippe de Champaigne  "Last Supper", a 1685 painting by Simon Ushakov  "Last Supper", a 17th-century painting by Nicolas Poussin  "The Last Supper", a 1721 painting by Gustavus Hesselius  "The Last Supper", an 1861 painting by Nikolai Ge  "Last Supper", a 1974 painting by Ultra Violet (Isabelle Collin Dufresne)  "The Sacrament of the Last Supper", by Salvador Dalí  "The Last Supper", a 1986 series of paintings by Andy Warhol  "The First Supper", a 1988 painting by Susan Dorothea White  "The Last Supper: Spirit, Flesh, Blood", 2006 series of paintings by Igor Kalinauskas