diff --git a/modules/ingredient/ingredient.module b/modules/ingredient/ingredient.module
index fe4f09d..97d5c01 100644
--- a/modules/ingredient/ingredient.module
+++ b/modules/ingredient/ingredient.module
@@ -79,3 +79,61 @@ function ingredient_is_page(Ingredient $ingredient) {
   }
   return FALSE;
 }
+
+/**
+ * Converts an ingredient's quantity from decimal to fraction.
+ *
+ * @param float $ingredient_quantity
+ *   The ingredient quantity formatted as a decimal.
+ * @param string $fraction_format
+ *   A string representing the fraction format, used by sprintf().
+ * @param bool $edit_mode
+ *   Whether or not the ingredient is being edited.
+ *
+ * @return string
+ *   The ingredient quantity formatted as a fraction.
+ *
+ * @deprecated This function was deprecated in version 8.x-2.0 and will be
+ *   removed in version 3.0.0.  Use
+ *   \Drupal\ingredient\Utility\IngredientQuantityUtility::getQuantityFromDecimal()
+ *   instead.
+ */
+function ingredient_quantity_from_decimal($ingredient_quantity, $fraction_format = '{%d} %d⁄%d', $edit_mode = FALSE) {
+  return \Drupal::service('ingredient.quantity')->getQuantityFromDecimal($ingredient_quantity, $fraction_format, $edit_mode);
+}
+
+/**
+ * Converts an ingredient's quantity from fraction to decimal.
+
+ * @param string $ingredient_quantity
+ *   The ingredient quantity formatted as a fraction.
+ *
+ * @return float
+ *   The ingredient quantity formatted as a decimal.
+ *
+ * @deprecated This function was deprecated in version 8.x-2.0 and will be
+ *   removed in version 3.0.0.  Use
+ *   \Drupal\ingredient\Utility\IngredientQuantityUtility::getQuantityFromFraction()
+ *   instead.
+ */
+function ingredient_quantity_from_fraction($ingredient_quantity) {
+  return \Drupal::service('ingredient.quantity')->getQuantityFromFraction($ingredient_quantity);
+}
+
+/**
+ * Returns a best-guess matched unit key for a unit of measure.
+ *
+ * @param string $subject
+ *   The unit of measure for which the function will search.
+ *
+ * @return string|false
+ *   The unit's key from configuration or FALSE if there was no match.
+ *
+ * @deprecated This function was deprecated in version 8.x-2.0 and will be
+ *   removed in version 3.0.0.  Use
+ *   \Drupal\ingredient\Utility\IngredientUnitFuzzymatch::getUnitFuzzymatch()
+ *   instead.
+ */
+function ingredient_unit_fuzzymatch($subject) {
+  return \Drupal::service('ingredient.quantity')->getUnitFuzzymatch($subject);
+}
diff --git a/modules/ingredient/src/Utility/IngredientQuantityUtility.php b/modules/ingredient/src/Utility/IngredientQuantityUtility.php
index e15779d..156fde1 100644
--- a/modules/ingredient/src/Utility/IngredientQuantityUtility.php
+++ b/modules/ingredient/src/Utility/IngredientQuantityUtility.php
@@ -119,7 +119,7 @@ class IngredientQuantityUtility {
    * @return int
    *   The greatest common divisor of $a and $b.
    */
-  public function getGcd($a, $b) {
+  protected function getGcd($a, $b) {
     while ($b != 0) {
       $remainder = $a % $b;
       $a = $b;