This was on Jack Keller's site. I had it saved on my computer with the hope of making it someday.
Hope this helps.
Key Lime-a-Rita Wine
zest and juice from 10 key limes
juice from an additional 10 key limes
11.5 oz. can Welch's 100% White Grape Juice frozen concentrate
1 lb. 10 oz. sugar*
1 tsp. pectic enzyme
1 tsp yeast nutrient
1/4 tsp. powdered grape tannin
3.25 qt. water
1/2 tsp. potassium sorbate
potassium metabisulfite (or finely crushed Campden tablets) as needed
200 mL Finest Call Premium Triple Sec Syrup
Red Star Côte des Blancs wine yeast
*To produce an initial dry wine, sugar should not be increased; the grape concentrate will provide 8.45 oz. of additional sugar. Initial PA will be reduced after topping up following racking but this is expected. This wine is not balanced above 13% abv.
Collect the zest from 10 key limes and then juice them and 10 more, Put zest, juice, tannin, yeast nutrient, and sugar in primary. Add grape juice concentrate and water and stir until sugar is dissolved. Stir in pectic enzyme and cover primary with sanitized cloth. Wait 10-12 hours and add activated yeast in starter solution. Recover the primary, set aside until vigorous fermentation subsides and transfer to secondary. Top up to within 3 inches of mouth of secondary and attach airlock. After one week, stir in 1/16th tsp. potassium metabisulfite (or one finely crushed Campden tablet) and top up to within 3/4 inch of bung. Wait for wine to ferment to absolute dryness (30-45 days) and rack, top up and reattach airlock. Rack again when wine is brilliantly clear (additional 45-60 days). Add potassium sorbate and additional 1/16th tsp. potassium metabisulfite (or another finely crushed Campden tablet) and let bulk age 3 months. If additional sediments have formed, rack once again. Obviously, the "secret" ingredient is the Triple Sec syrup. Add it now and stir. Bottle and set aside to age. Do NOT taste this wine for at least 6 months --1 year if you have real willpower. It will be worth the wait, but you will hate yourself if you don't make several gallons initially. [Author's own recipe, with inspiration from Martin Benk