Database
[{"_id":1,"menu":[{"dishCategory":"61e6089f209b802518e2b4a5","dishMeals":[{"dishMealName":"Burger King","dishMealIngredients":"Burger lepinja, bbq sos, berlin sos, zelena","dishMealPrice":5}]},{"dishCategory":"61e6089f209b802518e2b4a4","dishMeals":[{"dishMealName":"Burger King","dishMealIngredients":"Burger lepinja, bbq sos, berlin sos, zelena","dishMealPrice":5}]}]}]
Query
db.collection.update({"_id":1,"menu.dishCategory":"61e6089f209b802518e2b4a4"},{$push:{"menu.$.dishMeals":{dishMealIngredients:"lepinja",dishMealName:"king"}}})