Final answer:
Traditional guidance suggested a thickness of 5 diameters side-to-side and 7-8 diameters deep for regular Chuck Agujas while newer research recommends 8 diameters side-to-side and 15 diameters deep for improved cooking and tenderness.
Step-by-step explanation:
The thickness recommendation for regular Chuck Agujas, or beef chuck needles, has been subject to traditional rules as well as more contemporary research. The older guideline suggests a thickness 5 diameters side-to-side and 7-8 diameters deep for optimal results. However, recent studies propose a greater thickness, advocating for 8 diameters side-to-side and as much as 15 diameters deep. This increase in size is thought to impact the cooking and tenderness of the meat positively.