The phrase "and yet so often" is correct and usable in written English.
It can be used to express a contrast or irony, indicating that something occurs frequently despite other circumstances or expectations.
Example: "She claims to dislike the cold, and yet so often she chooses to go skiing in the winter."
Alternatives: "and yet frequently" or "and yet many times".
Of all Britain's birds, few are as common and widespread, and yet so often taken for granted, as the moorhen.
"Seeds are the caviar of the tomato," he said, "the most important part, and yet so often, they go to waste".
Borders are fluid things; they help define our identities, and yet so often we use our identities to push up against borders and redraw them.
Housing providers are social businesses, and yet so often, we are held back from fulfilling this social purpose through inconsistent policy, regulatory mandates and grant funding requirements.
I'll be writing more about char-fired chow in a few weeks, so for now I want to concentrate on what I think of as "barbecue ballast": those starchy, carby side dishes that are so crucial to a really memorable, satisfying alfresco eating experience, and yet so often fail to deliver.
Another new feature — which really should be a part of any collaboration software, and yet so often is not (hello, Convo) — is a "follow-up" section, where users can flag conversations they would like to track.
Yet so often, and for so many servicemen and women, a good night's rest evades us.
Add to these startling images Beckett's pared-down yet so often poetic text, and some thoroughly modern angst, and the playwright emerges as the true theatrical innovator he undoubtedly was, but one who also belonged, as he himself claimed, to a rich literary and artistic European continuum.
Rearing animals helped me to understand the inherent value of food, and harvesting my own vegetables drummed in the basic – yet so often forgotten – principle that food should be seasonal and come from the ground.
Mitchell is keeping the play alive, yet so often I sit in theatres and watch productions of classic texts presented with no discernable passion or urgency at all, as if the director has never considered the questions: "Why revive this play at all?
Yet so often we are driven by greed and by the arrogance of dominion, possession, manipulation and exploitation; we do not preserve nature; nor do we respect it or consider it a gracious gift which we must care for and set at the service of our brothers and sisters, including future generations".
