JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    Preferred flavor
    <div><input type="radio" name="flavorGroup" value="cherry" data-bind="checked: flavor" /> Cherry</div>
    <div><input type="radio" name="flavorGroup" value="almond"  data-bind="checked: flavor" /> Almond</div>
    <div><input type="radio" name="flavorGroup" value="Monosodium"  data-bind="checked: flavor" /> Monosodium Glutamate</div>
</div>

JavaScript

var viewModel = {
        flavor: ko.observable("cherry")
    };
     
    ko.applyBindings(viewModel);