Try this Southwestern Mac and Cheese recipe, or contribute your own.
Swapping standard cow's milk for evaporated milk alters the emulsion stability entirely, introducing higher protein concentrations that resist breaking under direct heat. While pressure cookers simplify starch gelatinization by forcing liquid into the pasta at temperatures exceeding standard boiling points, scaling these proportions requires precise mathematical adjustments rather than linear guessing.
Starch molecules retrograde rapidly as temperature drops, meaning day-old portions demand moisture replenishment to restore fluidity. Careful attention to pressure release timings prevents the elbow macaroni from absorbing excess ambient liquid and turning pasty.