app/views/spree/products/recently_viewed.html.erb
<% if cached_recently_viewed_products.any? %>
<div id="recently_viewed" class="mt-4" data-hook>
<h3 class="product-section-title"><%= Spree.t(:recently_viewed_products) %></h3>
<ul id="recently_viewed_products" class="list-group">
<% cached_recently_viewed_products.each do |product| %>
<li class="list-group-item"><%= link_to product.name, product %></li>
<% end %>
</ul>
</div>
<% end %>