Just let the scale do all the hard work of counting and measuring Noct.

Ignis turns around when Ivory flies in and he knows that Ebony won't be too far. As suspected, the Moogle is peering in, not actually flying over because- forbidden zone when Ignis is cooking.

"Well," Ignis says with a smile, "if Noct wants to make some for you." He turns to grin mischievously at Noct.