Precisely portioning a rack of lamb, regardless of whether it's been pan-roasted or prepared sous vide, demands more than just a simple cut between the bones. To ensure equitable distribution of meat, one must consider the natural curvature of the rib bones. Neglecting this crucial detail can result in unevenly sized portions, with some ribs having scant meat and others bearing an abundance.
Upon closer inspection of a lamb rack, you'll observe that the ribs arc at an angle, making their alignment with the loin far from linear. This non-uniform curvature means that if you cut indiscriminately, you risk leaving some chops nearly devoid of meat, while others become disproportionately thick. Understanding this anatomical subtlety is key to achieving uniformly generous servings.
As illustrated in the provided visuals, the termination points of the ribs are not in a straight line. The direction of this curvature, either to the right or left, depends on which side of the animal the rack originated. For instance, if the bones curve downwards and to the left, the loin will be subtly shifted to the right relative to these bones. This asymmetry means that a simple vertical cut can lead to an uneven distribution of meat.
Consider the outermost rib on the right: it often boasts a significant extension of the meaty loin. Conversely, the innermost rib on the left may have very little additional meat. If you were to slice between the bones, favoring the bone to the left of your knife, the rightmost rib would receive an excessively thick portion, while the leftmost would be left with a disappointingly thin strip. To counteract this, the optimal method involves guiding your knife along the bone to the right, ensuring that both the leftmost and rightmost ribs receive a fair share of meat. It's important to remember that these cutting directions will be reversed for racks sourced from the opposite side of the lamb.
This principle extends to dividing a larger eight-bone rack into smaller segments. Without proper attention to the bone's curve, one four-bone section might end up significantly larger than its counterpart, even though both contain an equal number of bones. Thus, recognizing the bone structure before making any cuts is paramount to culinary success and fairness in serving. This meticulous approach guarantees that each diner receives a perfectly portioned, succulent chop, leaving no one feeling short-changed.