What I love about this painting:
It seems like a good time to revisit Vermeer’s famous painting, known as “the Milkmaid.” This is lovely look into the past, a window into daily life of 1657 – 1658. I love the realism, the way the maid carefully pours the milk into the bread.
All of Vermeer’s known works illustrate how the quiet moments in life can be the most profound.
Wikipedia has many things to say about this painting.
About Johannes Vermeer, the Master of Light (from Wikipedia)
Johannes Vermeer (October 1632 – December 1675) was a Dutch painter who specialized in domestic interior scenes of middle-class life. He was a moderately successful provincial genre painter in his lifetime but evidently was not wealthy, leaving his wife and children in debt at his death, perhaps because he produced relatively few paintings.
Vermeer worked slowly and with great care, and frequently used very expensive pigments. He is particularly renowned for his masterly treatment and use of light in his work.
Vermeer painted mostly domestic interior scenes. “Almost all his paintings are apparently set in two smallish rooms in his house in Delft; they show the same furniture and decorations in various arrangements and they often portray the same people, mostly women.”
He was recognized during his lifetime in Delft and The Hague, but his modest celebrity gave way to obscurity after his death. He was barely mentioned in Arnold Houbraken‘s major source book on 17th-century Dutch painting (Grand Theatre of Dutch Painters and Women Artists), and was thus omitted from subsequent surveys of Dutch art for nearly two centuries. In the 19th century, Vermeer was rediscovered by Gustav Friedrich Waagen and Théophile Thoré-Bürger, who published an essay attributing 66 pictures to him, although only 34 paintings are universally attributed to him today. Since that time, Vermeer’s reputation has grown, and he is now acknowledged as one of the greatest painters of the Dutch Golden Age. 
About the featured painting, The Milkmaid, also from Wikipedia:
Despite its traditional title, the picture clearly shows a kitchen or housemaid, a low-ranking indoor servant, rather than a milkmaid who actually milks the cow, in a plain room carefully pouring milk into a squat earthenware container (now commonly known as a “Dutch oven”) on a table. Also on the table are various types of bread. She is a young, sturdily built woman wearing a crisp linen cap, a blue apron and work sleeves pushed up from thick forearms. A foot warmer is on the floor behind her, near Delft wall tiles depicting Cupid (to the viewer’s left) and a figure with a pole (to the right). Intense light streams from the window on the left side of the canvas.
The painting is strikingly illusionistic, conveying not just details but a sense of the weight of the woman and the table. “The light, though bright, doesn’t wash out the rough texture of the bread crusts or flatten the volumes of the maid’s thick waist and rounded shoulders”, wrote Karen Rosenberg, an art critic for The New York Times. Yet with half of the woman’s face in shadow, it is “impossible to tell whether her downcast eyes and pursed lips express wistfulness or concentration,” she wrote.
“It’s a little bit of a Mona Lisa effect” in modern viewers’ reactions to the painting, according to Walter Liedtke, curator of the department of European paintings at The Metropolitan Museum of Art, and organizer of two Vermeer exhibits. “There’s a bit of mystery about her for modern audiences. She is going about her daily task, faintly smiling. And our reaction is ‘What is she thinking?'” 
Credits and Attributions:
The Milkmaid, by Johannes (Jan) Vermeer ca. 1658 [Public domain or Public domain], via Wikimedia Commons.
 Wikipedia contributors, “The Milkmaid (Vermeer),” Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/w/index.php?title=The_Milkmaid_(Vermeer)&oldid=853243011 (accessed August 31, 2018).
 Wikipedia contributors, “Johannes Vermeer,” Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/w/index.php?title=Johannes_Vermeer&oldid=854172655 (accessed August 31, 2018).