They wanted to serve Colombian fire with their first cooks.
But Carito and Yan collapsed and burned during their instant restaurant in a disaster on Wednesday night.
The pair scored collectively 38 out of 130 for their three sword menu – a world away from 96 scored by Perth's steam pair Amanda and Blake the previous night.
Karito wanted to portray her South American heritage with a menu that started with a popla rellena, a deep-fried ball with meat and potatoes.
Pete Evans scored fifth and Manu Fidel's six, with the two judges commenting on the relationship.
"The Popes themselves are generous, golden, crunchy, but there is little, but too much potatoes compared to filling," Feydel said.
"Filling, it's nice, but then suddenly you leave a lot of potatoes … it's a home-made recipe and very pleasant, but it could have been a bit better.
Evans added that Karito should not give up the tradition for the presentation.
"I feel like you're teasing me really, because I want to experience the true Colombian food and I just have to ask why you decided to make three balls on a plate instead of a traditional bigger one," he said.
"Forget the presentation. We do not care at this stage what it looks like. Give us the authentic food."
Next was estofados deres platano (beef stew with jeans), which seemed to send the DA duo up, leaving only two and three of Evans and Fejdel.
Both said that eating missed taste and "disappointing".
"I think the expectations were so great they took us to Colombia," Feydeel said.
"I do not think that by now they have come to that unfortunately … there is no doubt that passion is present in your veins, but you need to take us there with eating."
Another competitor Andy, who also derives from South America, argued about the sentimental recipe of Carito.
"Maybe it's her family, you know the mother does not have a palate," she said.
In a piece for the camera, Blake said the Peruvian food blogger had gone too far.
"Andy is a savage. You never talk about someone's family with their cooking," he said.
The dessert was the biggest failure of all, with Yan's suspicion failing to be set up and served in liquid form.
"It looks more like a drink like dessert," Feydeel said.
"The taste is really intensified, like drinking condensed milk."
Evans added: "I do not have much to say about this dessert, it's awkward, it's a tough night for you." People at home sit there and think that "I can do better" until they enter the kitchen. "
The judges gave one point to the vessel. Combined with the results of the team, a total of 38 out of 130 places Karito and Yan at the bottom of the board.