"Yearly tradition" refers to an activity, event, or custom that takes place every year. It is something people continue to do on an annual basis, often to commemorate or celebrate a specific occasion or to uphold a long-standing practice.
They're soft and buttery with the perfect amounts of warm spice and dried fruit, and the icing takes them from being everyday buns to a memorable yearly tradition. (e2bakesbrooklyn.com)
The other loses an executive, a sad yearly tradition. (pocketnow.com)
That was my favorite house - related yearly tradition for years and years (we moved so I don't know if they still do that in Portland or not)! (theinspiredroom.net)