NTV state television reporter Vyacheslav Nemyshev is the second Russian journalist to be deported from Ukraine in just over a month.
Anna Kurbatova, a reporter with Russian Channel One television, was kicked out for similar reasons at the end of August.
The SBU security service said Nemyshev had prepared a series of "deceitful anti-Ukrainian" reports that propagated the separatist cause of the two Russia-backed fiefdoms of Lugansk and Donetsk in Ukraine's east.
The dessert is made by a confectionary company founded by Ukrainian President Petro Poroshenko.
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The SBU banned Nemyshev from returning to Ukraine for three years.
Kiev accuses Moscow of plotting and backing a war in its industrial east that has claimed more than 10,000 lives since 2014.
The Kremlin denies any involvement despite overwhelming eyewitness evidence of its tanks and troops crossing the Russian-Ukrainian border into the war zone.
But Russian TV still provides the main source of news in the predominantly Russian-speaking eastern conflict zone.
Ukraine's own television stations were taken off the air by the insurgency leaders near the start of the war.
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