What is the meaning of "Telavev"?
Targum Yonasan: V'Sachalot. Radak (from Pesachim 39b) - this is dough scalded in very hot water 1 [and afterwards, in oil - Rashi (8)].
The Tosefta (Chalah 1:1) says that the flour is put in the water. Piskei Rid (Pesachim 37b) implies that it is called so also when the water is poured onto the flour.
How would David understand why he wants specifically Tamar to make the food and feed him?
Alshich: The sadness due to the illness removed my appetite ("Kol Ochel Tesa'ev Nafsham" - Tehilim 107:18). Through seeing her beauty, I will get a little Simchah. She will feed me, and this will help to give to me appetite.
Malbim (5,6) Yonadav intended that David understand that Amnon is mortally sick due to desire for her. Amnon misunderstood. He intended that only Tamar knows well how to make the Levivos.
