It's a custom in our family.

Meaning

This is a tradition specific to our family.

Examples

• John: 'Why do you always have this dessert after dinner?'
• Alice: '<b>It's a custom in our family.</b> My grandmother always made it.'
• John: '<b>It's a custom in our family.</b> It's been a tradition for years.'
• Alice: 'Why do you sing this song at every gathering?'