Roux
Roux () is flour and fat cooked together and used to thicken sauces. Roux is typically made from equal parts of flour and fat by weight. The flour is added to the melted fat or oil on the stove top, blended until smooth, and cooked to the desired level of brownness. Butter, vegetable oils, bacon drippings or lard are commonly used fats. Roux is used as a thickening agent for gravy, sauces, soups and stews. It provides the base for a dish, and other ingredients are added after the roux is complete.
Carstian Luyckx
Luyckx painted a number of garland paintings. In a few of these the cartouche was painted later by an unknown hand. An example is the "" (Princeton University Art Museum), which shows a flower garland around a portrait of Peter Paul Rubens painted at a later date by an unknown artist. This may be an indication that the painting had remained unsold during his lifetime. Luyckx rendered the flowers with such specificity that they can be identified easily. They are a combination of familiar Western European garden plants such as carnations and columbines as well as exotic varieties from the Orient, including the pink damask rose and the tulip. Luyckx included the rare parrot tulip, an extremely expensive variety at that time.