Just the way I learned it, but worth a try: mix bourbon/rye with syrup, pour over a large glass/jar containing a lot of mint. Muddle mint in the liquid, cap & refrigerate overnight. The liquor tames the mint, the mint tames the liquor, the syrup just makes it taste like just refreshing enough. Strain liquid onto ice & stir. I never can get the crushed ice crushed enough . Serve in a sterling julep cup, sip while watching the Derby on the tube.