John the Baptist was a missionary preacher active in the area of Jordan river in the early part of the 1_st century AD. He is also known as John the forerunner, and prophet Yahya in Islam.
He's birth is celebrated on June 24, or in some nations on the closest Sunday, In Sweden he is commemorated on the Sunday after Midsummer day.
The attributes of John the Baptist are: camel-skin robe, cross, and lamb. So if they appear in a painting or photo, they are probably there as a reference to John the Baptist.
The color of the tablecloth is white, indicating that it is a feast day. The figurine is a figurine of John the Baptist, and the lamb figurine lays at hes feet.
The meal is a reference to hes life in the deserts of the Holy land, with rice, a lentil stew (Masoor Dal), dried meat, and dates. It is not possible to know for sure what he ate two thousand years ago, but trade with India flourished, and this is a reasonable guess based on what historical facts are available.