Complex sentence: A1 has undergone a number of revisions since its initial inception, the most recent of which were the removal of anchovies from the recipe during the 1990s, and the subsequent introduction of corn syrup.
Split into simpler sentences: A1 has undergone a number of revisions since its initial inception. The most recent of which were the removal of anchovies from the recipe during the 1990s, and the subsequent introduction of corn syrup.