Co-owner Giovanni Aiello tells WFMZ, that's the recipe.
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"I've been making pizza for 43 years," he says.
Frank Grigoli is a manager and his father is Giovanni's brother, another co-owner.
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"We've done a lot to this place, but one thing we've never changed is the quality," Frank says.
That's why, recently, they decided they'd reward their customers with something new: a contest for free pizza for a year.
Giuseppe Aiello, Giovanni's son, tells us they never expected what came next.
"I thought someone would win, they'd be excited, come in and get their pizzas, but a story like this to come out of a contest like that..." he trails off.
You see, when the computer randomly chose a winner from the 1200 people who signed up, up popped the name 'Josh Katrick', someone who really deserved to get some good news.
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Josh was diagnosed with colon cancer in July. He got the email from Mario's on a Friday, just as he was leaving the chemo treatment center.
"I remember coming out of there thinking, 'I just won pizzas for a year! That's cool!' he says.
But then Josh - a winner Mario's found so deserving - did the darnedest thing.
He gave it away.
"I've been getting so much from family, friends, people I don't even know well, the last few months," Josh says.
Getting so much love and support...I just wanted to give back to people that could use it more than I could."
Josh wrote Mario's back and asked if he could give his free pizza to someone else.
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Frank remembers the conversation. "We asked the question, 'who are you thinking?' and he said, 'Northampton Food Bank.' And it kind of, like, it hit a nerve...in the heart," Frank says.
So, a pizza shop known for spreading the warmth, decided this Christmas to spread it a little further.
They're giving both Josh and the food bank, free pizza for a year.
"It's better to give than receive, and especially during this time of year - Christmas - it's a great time to think about that and see examples of it around town," Giuseppe says.
"And this time of year, doing what we're doing, I can't think of anything better," Frank adds.
This Christmas, this group says they hope their story warms up your heart - and reminds others to practice kindness.
You never know when it might come full circle.