My interpretation:
1.5 oz Old Forester Kentucky Straight Bourbon Whisky 100 pf
0.5 oz Noilly Prat Extra Dry Vermouth
1 dash Angostura bitters
Pour ingredients directly in glass with large piece of ice and lemon twist. — This Dry Manhattan served down on the rocks appears first in JM1910. The instructions generally seem to imply that the lemon twist should be placed in the glass first before stirring.
