Preparing rubbed in cakes is a fundamental skill in the cake making profession, requiring mastery of specific techniques to ensure a light and tender texture. This chapter introduces key terminology and essential personal protective equipment (PPE) necessary for safe and hygienic cake preparation. In various Kenyan workplaces such as county referral hospitals, universities, and retail bakeries, adherence to these basics prevents contamination and workplace accidents, enhancing both product quality and employee safety.

1.1 Definition of Terms

Understanding the terminology related to rubbed in cakes gives a solid foundation for practical skills and clear communication in a bakery or pastry kitchen. Precise use of terms keeps recipes consistent and instructions clear whenever more than one baker works from the same recipe card.

Cake

A cake is a baked product made by combining flour, fat, sugar, eggs and a leavening agent into a batter or dough that sets into a solid, sliceable crumb when baked. In the rubbed in method the structure comes from fat worked into the flour until it resembles fine breadcrumbs, giving a short, tender crumb rather than the light, open crumb of a creamed or whisked cake. A bakery preparing a batch of rock cakes for the morning display counts on this short texture to tell customers what kind of product they are buying.

Cake Batter

Cake batter is the semi-liquid or dough-like mixture formed once the dry ingredients, fat, egg and liquid have been combined, but before baking has begun. A rubbed in batter is usually stiffer than a creamed batter, since less liquid is needed to bring the rubbed-in crumbs together into a dough that can be shaped by hand, as with scones and rock cakes. A baker checks the batter's consistency before it goes into the oven: a batter that is too wet spreads flat on the tray, while one that is too dry will not bind into shape.

Rubbed In Method

The rubbed in method is a cake mixing technique where fat, usually butter or margarine, is combined with flour by rubbing the two ingredients together using the fingertips until the mixture resembles fine breadcrumbs. This coats the flour particles with fat, limiting gluten formation and giving a crumbly, tender texture. A pastry kitchen preparing shortbread bases for a layered cake uses this method to get a delicate, short crumb.

How the method is carried out:

1. Sieve the dry ingredients together, which removes lumps and works air into the flour.
2. Cut the cold fat into small pieces and add it to the flour.
3. Rub the fat into the flour with the fingertips, lifting the mixture above the bowl as you work so that air is drawn in and the hands stay cool.
4. Continue until the mixture resembles fine breadcrumbs, with no visible lumps of fat left.
5. Add the sugar and any dried fruit, mixing them through evenly.
6. Add the liquid and bring the mixture together quickly into a soft dough or batter, handling it as little as possible.

Use the fingertips, not the palms. The fingertips are the coolest part of the hand, and palms warm the fat, which then melts into the flour instead of staying as separate coated particles, giving a heavy, greasy result instead of a short, crumbly one. Keep everything cold: cold fat, cold hands and a cool working area all keep the fat solid while it is dispersed through the flour, which is what the method depends on.

Examples of products prepared using the rubbed-in method:

• Scones: a quick teatime bake, split and served with butter or jam.
• Rock cakes: a firm, lightly sweetened bun with a rough, rock-like top.
• Shortcrust pastry: the pastry case for sweet and savoury pies and tarts.
• Shortbread biscuits: a high-fat, crumbly biscuit baked slowly to a pale colour.
• Fruit crumble toppings: a loose rubbed-in mixture scattered over stewed fruit before baking.
• Light traditional fruit cakes: a lighter fruit cake made by the rubbed-in method rather than creaming.

The method is not confined to cakes: shortcrust pastry, shortbread and crumble toppings are made the same way, which is why a baker who masters rubbing in can produce a wide range of products from one technique. What they share is a high proportion of flour to fat and a texture that is meant to be short and crumbly rather than light and springy.

Gluten Formation

Gluten formation is the development of elastic protein strands when water and flour interact during mixing. In rubbed in cakes, limiting gluten formation matters because it avoids toughness. The fat coats the flour particles, reducing water absorption and gluten development, which is why the rubbed in method gives a softer product than a kneaded dough.

How gluten is kept low:

• Fat coats the flour: this physically keeps water away from the protein so fewer strands form. This is the shortening action that gives shortcrust and shortbread their names.
• Soft flour is used: it carries less protein than strong flour, so there is less to form gluten in the first place.
• The liquid is kept to a minimum: gluten cannot develop without water.
• Mixing stops as soon as the dough comes together: every extra moment of handling develops more gluten.
• The mixture is not kneaded: unlike bread dough, where gluten development is the whole point.

This is the opposite of bread making, where gluten is deliberately developed to trap gas and give a chewy, elastic structure. In rubbed in work it is deliberately kept low, and a rubbed in product that has been overworked comes out tough, hard and shrunken.

Crumbly Texture

A crumbly texture describes a cake that breaks easily into small pieces rather than stretching or bending. This texture is wanted in rubbed in cakes because it signals a tender structure. The trade word for this quality is shortness: a product is described as short when it crumbles cleanly under slight pressure. Shortness comes directly from the fat coating the flour, so the more fat in proportion to flour, the shorter the result, which is why shortbread, with its very high fat content, is the shortest of the products made this way.

Creaming Method

The creaming method involves beating fat and sugar together until light and fluffy before adding the other ingredients. Unlike the rubbed in method, creaming beats air into the mixture, giving a different texture and rise.

Rubbed in compared with creamed:

The fat to flour ratio is the quickest way to tell the two apart. When the recipe calls for fat weighing half the flour or less, it is a rubbed in mixture, and when the fat approaches or equals the weight of the flour, it is creamed. This single check answers most questions asking which method a given recipe uses.

Aeration

Aeration is the process of working air into the cake batter to improve volume and texture. In rubbed in cakes aeration happens in three ways, and it matters to know which one does most of the work.

• Chemical raising agent: baking powder, or bicarbonate of soda with an acid, releases carbon dioxide during baking. This is the main source of rise in rubbed in products, which is why leaving out the raising agent gives a flat, heavy scone no matter how well the fat was rubbed in.
• Mechanical aeration: air is drawn in while sieving the flour and while lifting the mixture during rubbing, contributing a smaller part of the rise.
• Steam: water in the mixture turns to steam in the oven and expands, lifting the structure further.

This is the clearest difference from the creaming method, where air beaten into the fat and sugar does most of the lifting and the raising agent plays a supporting role. A bakery that combines careful rubbing with correctly measured baking powder produces tender tea cakes that hold their shape on the shelf.

Chapter Summary