title: How to delete cookie using IOwinContext in OwinMiddleware and .Net MVC 5?
body: <p>is there possibility to remove cookie based on cookie name in OwinMiddleware? </p>
  
  <p>I know that IOwinContext has own cookie abstraction based on Set-Cookie Header and HttpContext has own HttpCookieCollection. In my middleware I don't have access to HttpContext therefore I can't set: <code>Response.Cookies["userId"].Expires = DateTime.Now.AddDays(-1);</code></p>
  
  <p>Using IOwinContext I tried to do following: <code>
  Context.Response.Cookies.Delete("userId");
  Context.Response.Cookies.Append("userId", "");</code>
  but it doesn't work. </p>
  
  <p>There is any working example how can I achieve my goal?
  Thank you so much for your help and hints.</p>