Thanks, that was delicious!
Example: "Were you satisfied with your main course?" Answer: "It was delicious, thank you! And please bring the dessert menu to my wife and me."
Danke, das war köstlich! 
Tack, det var jättegott! 
Tak, det var lækkert! 
Takk, det var deilig! 
Kiitos, se oli herkullista! 
Aitäh, see oli väga maitsev! 
Ačiū, viskas buvo labai skanu! 
Paldies, tas bija brīnumgardi! 
Takk, þetta var ljúffengt!