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Fortification calculator
Spirit needed to bring a wine up to a target alcohol, for port-style and vermouth-style wines.
Spirit to add
1.79 L
Final volume
21.79 L
Relation used
Pearson square. If another calculator gives you a different answer, this is usually why. Neither is wrong; they are different published relations describing the same chemistry, and the useful thing is knowing which one produced the number in front of you.
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