Come for Shabbat, stay for the “Sperminator”?

This weekend, serial sperm donor Ari Nagel is speaking at a Shabbat soiree in an Upper West Side apartment. And if talk of impregnating strangers via sperm donation doesn’t whet guests’ appetites, a variety of kugel will also be served.

The Sperminator will discuss his “unconventional life” as a biological father to some 50 youngsters during the Sept. 21 event, with tickets costing $25. Admission will include four different types of “gourmet kugel” crafted by kosher chef Jonathan Hartig and will end with Shabbat services, according to the event listing.

Local group Kugel, an organization that targets what it calls “Jews in the gray zone,” is hosting the evening, which will feature the 43-year-old fertility advocate known for sharing his seed with women across the globe for free, often in public places, as its marquee guest.

But the event is strictly limited to educational chitchat over wholesome treats. No sperm donation will be allowed at Shabbat, Kugel group co-founder Simone Weichselbaum tells The Post.

“It’s a serious event,” says Weichselbaum. “There’s no sperm donation. We don’t want it to be a joke. We don’t want to make it a farce.”

Kugel, which was created last November, “invites speakers from a variety of Jewish backgrounds and turns these opportunities into a learning environment so diverse ideas can be exchanged.”

Still, Weichselbaum says she was “a little apprehensive, given the New York Post’s coverage of the Sperminator.”

‘It’s a serious event . . . We don’t want it to be a joke.’

As The Post reported, Nagel fathered his 50th child this summer with a homeless 18-year-old woman who found the CUNY math professor while searching for “free sperm donation” online.

Weichselbaum says she has known Nagel for 10 years and that he reached out via Facebook requesting to speak at one of the group’s events.

“I said, ‘If we do let him speak, I want to make [sure it’s not] a tawdry event,’ ” she says.

And so she invited several Manhattan rabbis to speak about Jewish law and how it views artificial insemination. Rabbi Elchanan Poupko will be on hand to answer questions and provide source sheets about how the Talmud views sperm donation.

“It’s an educational opportunity, so it’s not like the Sperminator is the only one speaking,” she adds.

The event listing says Nagel, who sometimes makes his donations by ejaculating into a cup in public restrooms, has 10 more children on the way. Over the summer, he made sperm donations in Latvia and Thailand, as reported by The Post.

Last year, Israel’s Ministry of Health tried to ban Nagel from donating his sperm because, according to Israeli law, sperm donation must be anonymous. But Weichselbaum says Kugel is looking to open up conversation to the larger topic of sperm donation in Judaism.

Weichselbaum says there are some people refusing to attend, asking her, “How could you have something so controversial?”

Her response? “He’s not pissing off the entire universe. He’s just pissing off some people.”