Mila Kunis dishes on pregnancy, engagement during visit to "Ellen"

Mila Kunis dishes on her pregnancy and engagement to Ashton Kutcher during a visit to "The Ellen DeGeneres Show," airing Friday.

The 30-year-old actress didn't reveal exactly when she's due (it will be this year) or if she's having a boy or a girl, but she did say she wants an all-natural pregnancy and also opened up about all those cravings

"I eat sauerkraut all day long," she said, adding, "This is the worst craving to have because sauerkraut smells and so every time you open up a jar, it just reeks in the whole kitchen...It's not like ice cream where everything smells lovely."

Kunis also loves pickles these days -- and thanks to Kutcher, she has a fridge chock-full of them. "I'll tell you a funny story," she said. "[Ashton] kind of preempted this. He assumed that I was gonna have goofy cravings, so he stocked our secondary fridge with weird food -- just, like, pickles and sauerkraut, or, like anchovies and ice creams -- just in case at one point during this pregnancy I'd be like, 'I really want something.'"

Apparently that happened last week, and Kutcher ran out to the backyard fridge and returned with a pickle -- much to Kunis' surprise.

Kutcher, 36, is also learning to speak Russian because Kunis is fluent and they want their child to learn the language, too. "He's been taking classes for probably like six months now," she said. "He does it twice a week. A woman comes to the house to give him lessons...It's really, really great."

Word about the celebrity couple's engagement got out in February, but Kunis says they were engaged for two months before that -- and somehow were able to keep it secret even though Kunis had been sporting an engagement ring.

Reports that the former "That '70s Show" stars were an item surfaced in April 2012. This will be the first marriage for Kunis (who previously dated Macauley Culkin) and second for Kutcher. He and actress Demi Moore announced they were separating in the fall of 2011.

Check out part of the "Ellen" interview below: