、。
He likes his drinks dry, so wine would be a good gift for him.
Literal
He [topic-は] dry-food-lover [copula-だから], souvenir [to-には] wine [subject-が] good [probably-だろう].
辛党 (からとう, 'dry-food lover') means someone who prefers savory/dry flavors — and by extension, alcohol over sweets. Contrasts with 甘党 (あまとう, 'sweet tooth'). お土産 here means 'gift' rather than 'souvenir.' だろう expresses the speaker's inference. The 辛党/甘党 contrast is a distinctly Japanese personality classification.