Preparation Place chiles, garlic, and ginger in a jar. Bring vinegar, sugar, and salt to a boil in a medium saucepan, stirring to dissolve sugar and salt. Pour hot brine into jar; let cool 30 minutes. Cover and chill at least 4 hours before using. Do Ahead Garlic-chile vinegar can be made 4 weeks ahead. Keep chilled.
Preparation Place chiles, garlic, and ginger in a jar. Bring vinegar, sugar, and salt to a boil in a medium saucepan, stirring to dissolve sugar and salt. Pour hot brine into jar; let cool 30 minutes. Cover and chill at least 4 hours before using. Do Ahead Garlic-chile vinegar can be made 4 weeks ahead. Keep chilled.