Same peril with the strong Alicante dessert wine, ten drops of which were long reckoned to be one of nature's surest cures.
Alicante is a strong dessert wine. 
mnli hypothesis: Alicante is a strong dessert wine.  premise: Same peril with the strong Alicante dessert wine, ten drops of which were long reckoned to be one of nature's surest cures.