Angcm. sesquipedale

How does one bloom this sucker?  A few months ago I moved it out into more
sun, with the Vandas.  Leaf color is appropriate, roots are incredible, over
all a very sturdy plant. It's in a CHC mix and is growing 2 pups.  Big
plant; was originally a pup from a larger specimen (that was a couple of
years ago).

I want a flower, not a salad!  What more does it need?

Diana