One alternative way would be starting from iPSCs, which were discussed earlier.  When a cell is reprogrammed into a pluripotent state, it activates endogenous telomerase expression thus bypassing the Hayflick Limit through restoration of telomere length.  This makes the cell essentially immortal, although increased cell divisions lead to higher likelihood of DNA replication errors such as chromosome duplications, deletions, inversions, etc, which can lead to apoptosis.  Starting with iPSCs would allow for easy and large scaling of the initial starting population.  These cells could then be guided through a differentiation protocol that mimics development, such as those previously discussed, in order to finally arrive at skeletal myotubes which can be formed into a meat product.