Your sentence has the following meaning:
Strawberry milkshakes here have twice the strawberry flavoring than
whatever other thing I normally get here.
As others have pointed out, If you are trying to say that this milkshake has more strawberry than past milkshakes, you have multiple problems with ambiguity; usage; and for many, grammar. When you fix the ambiguity problems, the other issues will most likely fix themselves.
We don't typically say we receive food items that we ordered. You are probably trying to get the aspectual marking correct, but here that only creates confusion.
Tim's answer shows how to resolve the aspect issues using demonstrative this, and get for receive. You can also use a past perfect for a more formal feel - This milkshake I ordered has twice as much strawberry flavoring as the ones I have gotten before.