Milner's injury-time goal over Leicester City - that secured a 2-1 victory to send Liverpool eight points clear at the top of the Premier League - was the 17th spot-kick he's converted for the Reds.
Heskey played with the midfielder at Aston Villa and can attest to how his proficiency from 12 yards out is no fluke.
The retired striker told Liverpoolfc.com: "He was our penalty taker at Villa. He's so good at them because of practice.
"He knows what he wants, he knows what he wants to do. He's so calm and confident with it.